I am not allergic to soy, but you can be a succesful veg*n without soy, you just need to buy alot more fresh ingredients. It would also probobly be alot easier for her if she tried cooking meals from scratch, insead of buying prepackaged items. Veggies can be snacks also! And, is she wanting to be a vegetarian or a vegan? Because if vegetarian that should open up alot of options for her, being able to consume dairy instead of faux dairy which almost always contains soy ingredients. Just tell her to make sure and always read ingredients, and possibly go to the doctor and get tested for allergies, because it may be that she isn't even allergic to soy. Its important that she knows what gave her that reaction so she can prevent it again in the future. Good luck to your friend!