Does she avoid soy lechitin and soybean oil as well?
The only reason I ask is because a lot of people allergic to soy can at least still have soy lechitin . It depends on severity and allergist suggestion. So that being said...I ate at Disney with a soy allergy but I was still ale to have soy lechitin.
In addition, I am allergic to peanuts, tree nuts, sesame, shellfish, eggs, wheat, oats, coconut, broccoli, soy protein
I ate very well.
For TS, we did:
Crystal palace (chef was amazing!..did this one twice)
1900 park fare (we didn't have chef TJ

) but it was still good
50s prime time was awesome
Sci Fi was great (he made us nachos for an appetizer since the artichoke dip was not safe!)
The plaza (was pretty good...nothing spectacular but my cheesesteak with no bun was good)
For QS we did:
POP food court (service was amazing!!!)
Columbia harbor house
Cosmic rays
Sunshine seasons
Studio catering company
We had amazing service everywhere. I'm sure that they will be able to accommodate a soy allergy pretty well at least at the TS restaurants. Might be more limited at QS. But considering soy is one of the top 8 allergens they should be pretty good. It's when the allergens are NOT one of the Top 8 that you start having some more problems sometimes.