As someone with IBD and living in a country with free healthcare, I would take off a week and very happily and very meticulously take dear daughter to have every last medical test taken, including a colonoscopy. By the time we're finished, she's either going to be cured and never joke about this s**t again or we will learn that she does indeed need a specialist diet. (My IBD for example comes with lactose sensitivity that doesn't show up with a regular prick test. But I can't even have mashed potatoes if it isn't made with lactose-free milk and a lick of soft serve will send me.)

Why is everyone ignoring that OP is expected to make all of these meals? I'd have just been like, listen, if you want this crazy diet then that's fine, but I'm done making anything for anyone in this house. You can learn to make your own food. Watch your influencers and have them teach you. I'm done. Then watch the whole thing implode.

I use msg in some of the food I make. I do it because it's damn delicious! My wife "suddenly" had an msg intolerance and it gave her headaches. I would point out foods that she liked that had msg and she said "oh, that must be really low because it doesn't bother me." I continued using msg in my dishes because, again, delicious. A few months later when she started on msg again, I told her all the dishes I make with msg and asked her what she thought made up a couple items in the spice cabinet (main ingredient was msg). I then talked to her about where the "msg bad" trope came from and that if she could pick and chose if it affected her, it likely wasn't an actual reaction. (I didn't say any of this in the assholey way this reads, just written for brevity). We don't use a lot of salt and cook pretty healthy food, after this conversation she stopped bringing it up and even uses it in her dishes occasionally.

Wholy c**p, NTA at all! Mom proved that the kid wasn’t allergic. Now everyone should be happy and maybe start looking for the real reason behind kid‘s issues. You know, how reasonable people would do

So the stepdaughter, the husband's ex AND the husband are all piling on her, while working 60 hours and cooking? Gee, that woman needs to get out of that house and that marriage altogether. Or kick the husband and the brat out, depending on whose house is it.

This behavior seems very petty and immature for an adult in their 30s. It's normal for teenagers to go through phases as they explore their identity. Instead of playing childish games to prove a point, OP should remember her own teenage years and use that understanding to better relate to her stepdaughter. Regarding the allergies, it's plausible for someone to experience reactions even without a diagnosed physical allergy. These reactions can be unpleasant and involuntary. I'm 29 and have had multiple eating disorders, especially throughout my late teens and early 20s. I can attest to severe reactions like stomachaches, nausea, vomiting, diarrhea and extreme weight loss, even without a true allergy. My mom would sometimes try testing me by mixing sensitive foods into my meals, which "often" resulted in same reactions. It wasn't worth the risk to prove a point. (Continued in reply: )

Attention seeking b******t. I wouldn’t have any time for it either.

Esh. Her for her food restrictions and you for the wicked stepmother stuff and putting stuff in her food. You should have noped out as soon as it was confirmed there was no allergies. You make what you are making and she eats it or not. Your husband can cook for her and if he whines that he can’t, tell him that you have confidence he can figure it out between cookbooks and YouTube.

What this stupid, ignorant, ungrateful b!tch of a fifteen-year-old needs is for someone to slap her upside the damn head with reality, repeatedly and relentlessly. Her step-mother is 1500% in the right for not agreeing to cater to the whims of some idiotic kid who believes every damn thing she reads on social media (which is a fvcking joke and should never have been created to begin with.) She is NOT mentally unstable, she's a damned spoiled manipulator who's doing nothing but throwing temper tantrums because she isn't getting her own way.

I say throw the whole family out.

The allergies don't "seem" fake, they *are* fake, as proven by the medical tests she took.

Yes, I love it! You go girl!

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All of these internet people and their stupid diets UGH!!! My older son and daughter-in-law have been all up in the keto Kool aid for several years and talked my other son into it for a while. They got mad especially her when he had to stop because it's expensive. They say it's not, my son is an electrical engineer and makes well over $100k a year and she does nothing except play video games all day. Has no friends and has no interest in making any, just has her nose so far up his butt it will never come out. If anything happens to him she is royally screwed because she is from Europe and has no interest in US citizenship, she would be sent back and knows it.

On principle, I dont think lying about what is in food is okay. I think she WOULD be the AH if she actually said "okay I'll wont include it in your foods." But then did. However she also should not have been forve to accommodate the daughter at all especially once it was made clear there was NO medical conditions. "The doctor said you are fine to eat these, so I'm not going to make you anything seperate. You are welcome to prepare your own food, but I won't be." So yeah it really comes down to if OP straight up LIED to her face about what was in her food, or if people just assumed.

As the tail wags the dog. Because of this spineless father,this mentally unstable 15year old was able to dictate what was allowed in your kitchen for you and your children to eat. This man is so lazy he doesn't think he should learn to cook or take his daughter to therapy. He knows this is a mental issue because she has no allergies. Both parents are parenting from guilt which ruins children and in your case it looks as if it's also causing other casualties. There's standing with your child if a step-parent is unkind or abusive, but this isn't justified.