Hi there
I am intereted to know what your daughter drinks.
Do you think she drinks enough water?
This could be the problem as I have heard about people's body being in a state of dehydrationn and they don't know it and this can cause ulcers. I fpossible try to get her to drink two litres of pure water evryday( I know this maybe a lot for a 4 year old) but it can really help to ease the pain of ulcers.
There is a book called "your bodies many cries for water" which you can google and find out more information on as this doctor who wrote the book has done a lot of research into treating ulcers with water.
Also you may want to try and give your daughter a more alkaline diet as too many acidic foods in the body can lead to ulcers forming.
Hope this helps
Regards
Beckie