Get some slippery elm and start taking level half teaspoonful or one teaspoonful about 6 times a day, depending on the need. This will coat and soothe the stomach, and protect the raw ulcer from more acid damage.
If the stomach still has pain, she can increase accordingly.
Slippery elm powder is not expensive, but usually very helpful.
Test the aloe vera on a sensitive spot on her skin to make sure she does not have a reaction to aloe vera. Some people have a sensitivity to aloe vera.
Use pure aloe vera gel and dilute it with very little water. I have seen it heal bleeding ulcers among my relatives