Aw, that's hard for the both of you. Moms just want to make everything all better. It's not easy; she just wants you to be well, full stop.
Maybe some of the research here could help here, like the youtube video of Dr Ebringer. There is also quite a bit of information online regarding people who have autoimmune diseases benefitting from a "paleo" diet, which basically seems no starch to me for the most part: meat, fish, vegetables, and fruit that is low glycemic.
Best wishes for you both to find your way in this issue. Sounds like there's a lot of love there. : )
Jan