OP YANBU in some ways, I understand that you should not have to eat DF because of this person.
However - it feels like you’ve never been in a free from section… you will easily be able to get DF sticky toffee pudding or cakes for less than £2 along with DF gravy, cream, custard etc. All pre-made and ready to go. If you guys are having Xmas pud and custard for dessert for example you can easily get a mini DF alternative.
In regards to all the idiots saying intolerance isn’t an allergy and they wouldn’t pander, due to my gluten intolerance and other stomach issues I ended up in intensive care. I also now have malabsorption problems and anemia due to these stomach issues and may need have transfusions going forward to fix this. Intolerances can lead to intestinal problems which in hand cause other severe issues. Also I’d rather not spend Xmas day in agony.
Please OP don’t become unreasonable to try prove a point. This person just doesn’t want to miss out, but I agree you and other family members shouldn’t have to either. Check everything from sauces to crackers for any traces of dairy.
I went to Sunday dinner at DP grandparents the other day and they were able to make everything for me gluten free and vegetarian and even had a few different options for dessert which was lovely.
It’s nice to be nice and offer as much as possible. Agreed that you guys shouldn’t miss out on things you enjoy too like cheese! Maybe ask said family member if they have a DF cheese and cracker brand they like so you’re not wasting your money on vegan cheese which is known to be pretty terrible.