Oh that's good advice, to send her the newbie link. I'll do that. And you're right about being firm from the beginning. I have a varied dietary history (vegetarian, vegan, raw foodist, etc) which was all done to try and get my health sorted, so my family is used to me having dietary restrictions, but this is, obviously, quite different, so I hope I can get them to understand.
It's going to be a big help with her being used to you already having dietary restrictions. The big thing that she is going to have to get used to is what utensils she uses while preparing foods. That seems to be one of my biggest downfalls, grabbing the wrong dang spoon .