L.D.
I would definitely stay away from anything that is made with ground meat because soy could be added as a filler.
Here are some articles that I pulled up that I think may be useful reading for you:
FOODS TO AVOID:
http://www.ehow.com/how_3966_live-with-allergy.html
http://hubpages.com/hub/Soy-Allergy-and-Foods-To-Avoid
SOY-FREE FOODS:
http://soyallergy.bibleclue.com/soyfreefood.html
http://www.enjoylifefoods.com/
http://www.livestrong.com/article/27218-soy-foods-list/
I've also learned that a lot of the grocery stores carry a list of products that they have in stock that are soy-free or dairy-free or gluten-free, so all you have to do is ask them for a copy of it or try to access the list on-line.
Hope this helps.