Hi, my mom has stomach cancer as well. Unfortunately for her they discovered it way too late. However, when she was getting her first few sessions of chemo, I used to give her blended oatmeal with water which can be refreshing for them and soothing for their stomach, this can also give them lots of energy as well. Any juices but homemade like pear, Apple, strawberry can also be good, I usually mix this with 2 tablespoons of oatmeal to make it like a "protein shake", this can help for when they don't really seem to have any appetite. As for soups, I boil a little piece of meat or chicken, along with a few potatoes, then blend it all, they don't have to eat the whole bowl of soup, with just a few tablespoons throughout the day, it can be good for when they don't really want anything else. I hope it helps and wish you and your mom the best.
