I don't want to negate genuine feelings, but the OP had 15 years as an only child, with all the attention that goes with that. At 15, you're usually trying to be more independent and look to your peers rather than parents for validation. I wonder if there's an element of a wounded inner child that's still very angry that mummy had a new baby? If so, the therapist isn't doing them any favours by encouraging the sense of victimhood. This is family life.

The upside of less mental health stigma: more people are seeking help. The downside: a******s call it "trauma" when other people exist in their world.

You know she ommited details to her therapist, too.

Op sounds like a spoiled rotten and entitled narcissist who refuses to share her parents with another person.

This woman is creepy and needs a deity, not a therapist.

I can't believe the younger sister still wants them in their life. Imagine basically being told 'you being born is the source of all my trauma'

YTA - if you are 15 and your parents have another baby, that baby will need more time and attention than a teenager. If they reuse your old babystuff, that's normal. As long as it's not "They went into my bedroom, took my childhood lovie Bearbear from my bed and gave it to my toddler sister." hand-me-downs are expected. Expecting you to help with the younger kid, and babysit, is also normal at 15+ "Watch your younger sibling for an hour while mum runs errands" is not parentification "It's your responsibility to pick the kid up from nursery when you finish school, look after them all afternoon, fix their dinner, bathe them and put them to bed." every day, is parentification. Sounds like older kid was and is jealous, and is misrepresenting the situation on social media for sympathy. If she's in therapy, she needs to check whether she's being completely honest there, or if she's manipulating her therapist too.

Well, first off, your therapist sucks or is stringing you along for more money. Second, the world does not revolve around you and whatever bent stuff is inside your head.

Big YTA, it does not sound like your sister uninvited you, she wants to allow children at her wedding, and has every right to. You don't want to attend 1 event with children present, and based on what you wrote it sounds like your sister understands that decision and is related to your trauma. You took it to social media and got other family members involved to get your sister to adjust her wedding and uninvite other people to suit your desires. Even though other family members jumped onto your bandwagon you are still the A-hole. If your trauma is that bad where you can't attend 1 event with children present politely decline the invite and STFU. I (43M) am childfree, and feel sorry for you if you can't even look to enjoy being a fun aunt/uncle. Don't blame your sister if she goes no contact with you after this.

OP's past trauma has way too much influence on her life as a 40 y.o. adult. I know dealing with old pains can be tough, but by this age one should be able to at least manage it, i.e. be able to confront said trauma without losing control. Or at least that's how I see it (having had my own fair share of painful childhood memories).

I found your inner child. It’s right here, in this post!

"I didn't go into detail because I didn't think that it was anyone else's business." Yet 👏 you 👏 posted 👏 about 👏 it 👏 on 👏 social 👏 media. 👏 This is just sad. You were 15 years old when your sister was born. You were not robbed of a childhood. You put your sister in a difficult position and then get upset about her decision to do what is best for herself. Then you post about it on social media yet omit the details because iT iSn'T tHeIr BuSiNeSs LOL. You must be a person that very few people like.

So at 15 your parents had another kid but were not rich enough to buy them new stuff. I think this person just has issues.

OMG, OP only made 1 single comment and the entitlement is strong on this one. Her idea of neglect was having to walk home with her sister (occasionally) and for 2 whole days and 1 whole night when her sister was 9 years old (making her 24 years old) because her grandfather died and her parents had to go help her grandmother deal. She even lived at home with her parents until she was 26 (that's 14 years ago bear in mind) and had to do things "like dishes and vacuuming" and her sister was "only responsible for her room and clearing up after herself" - that little girl was only 11 when OP left home. JFC, you gotta read the whole comment - https://www.reddit.com/r/AmItheAsshole/s/D4hFtJV8rr

I was an only child and my parents treated me like a princess. Then I got a little sister and I had to share my parents with her. Not fair so it's normal I hate kids. My parents don't understand this trauma but I'm really the biggest victim ever. Won't nobody think of ME (and Me and Me)?

How does this person manage to live in the world?? Do they panic anytime there are children in the vicinity? What an absolute twat!

Ooof, I thought maybe there was some real parentification going on that led to, you know, actual trauma, and that she just chose a very very poor example to give. I mean, she'd still be in the wrong for expecting her low-contact sister to disinvite close friends but at least it would mean people were going a little overboard in dragging her. Well, I found the comment she gave citing further examples of the parentification and it sounds like she really was expected to do very little. Still living at home at 26 and being asked to do harder chores than her 11 year old sister, or having to drive her around sometimes. Either she is *still* neglecting to give the details that actually explain her point of view, or (more likely) she needs to accept that she has blown it all out of proportion in her mind. [https://www.reddit.com/r/AmItheAsshole/comments/1afmjax/comment/kob37qh/]

so they were upset that she favoured her close friends over her so she should invite a number of close friends or tell them not to bring their kids because she doesn't like kids. trying to make it all about her and she didn't uninvite her either you declined the invitation how narcissistic can you be definitely YTA

However much therapy shes in... its not enough. Wow.

This is the kind of person who destroys public perception of "abuse" I see. Why is there always someone crying about abuse and then it turns out that they weren't at all. If OP was abused it's not shown in this post. What a selfish sad person. Does she want to be special and pitied so bad that she makes up trauma? OP needs a new therapist that'll help her see that trauma isn't something she should strive to force herself to have.

Big ick over this read. What a lost of a woman.

I hope this is a fake post because if it is real, then OP is truly a hot mess. Getting upset that her parents reused her old baby clothes and baby things when she was 15 is just pathetic. A 15 year old being asked to babysit her baby sister is not parentification. Parentification is when a child is required to take care of a younger sibling every day on a regular basis and the parents just pretty much check out and relinquish all responsibility. Babysitting is not parentification. And how pathetic is it that her jealousy and resentment has made her unable to be around any children at all? What a pathetic loser.

Sounds like continueing the low contact will be the best way forward from here for all parties. OP because appearantly she is so fragile that even everyday life seem to stress her out, and the rest of the family because OP is seriously dilutional, and have no sense how the world works. That seems to create a lot of problems for her, which is readily "outsourcing" to everyone else to deal with, rather than her working on herself and reflecting on her issues and what she can do about it. We can only hope that the therapy she is going in can help her see what she is infact doing, but she sounds like a narcisist, and that belongs in the family of psycopaths, and they are notoriously difficult to treat as there is something physical in their brains that is not wired correctly.