Wow hope you aren't offended but it seems like you have some real (JERKS) in your family.
My extended family still don't get this gluten-free diet. The latest is that I have been told not to come to Christmas dinner as I have 'that funny diet'. It is really annoying and I feel hurt. My sister in law is one of those who pretends to be gluten-free sometimes but eats regular food as well. So are my cousins. So they think I am being OTT silly about the whole idea. I have been gluten-free for 4 years now and they have made no attempt to learn about it. There was a birthday party last month I was not invited to either. Husband is supportive - he sees how sick I get with a cc reaction. We will have a quiet Christmas and gluten-free meals ourselves. But I still feel hurt...
I can see asking to bring something that you can eat because they can't be sure of gluten in foods but to ask you not to come how terrible.
my sister in-law has tweaked Thanksgiving dinner for me
she isn't going to stuff the bird and she will use organic gluten-free broth as well to insure I can enjoy a meal
she will leave the flour out of the topping on sweet potato casserole so I can have it.
I am very sorry you have to put up with such ignorance how UNKIND!!!