Help! My mom needs to gain weight

My mom just finished a long round of radiation to her stomach. She now has a very small stomach and needs to eat six small meals a day. She doesn't like sweets or cheese. She says they both make her very nauseaus. I have tried every supplement shake on the market. She got burned out on one that she drank for a while but I don't think she will ever get talked in to trying them again.
So..to make a long story short....She needs some ideas for six small meals a day filled with calories and good stuff to help her gain some weight back. It needs to not have any cheese in it ( Unless I can disguise it) and not too sweet. Any suggestions would be greatly appreciated.
Thanks!!!