Soy Free Menu

mlb0967

I am hosting a shower for my friend who has a soy allergy. I would like to have a few dishes that are soy free for her, so I asked her for menu suggestions. She told me that she would just bring her own food due to the allergy, as well to her dieting for a fitness show competition. She said she did this at the shower her stepmother threw for her. I think this is tacky, especially since I am offering her soy free options. Also because I am spending my time and money planning her shower and she's not even going to eat the food! What do you think? Am I being unreasonable?