Worried

My concern is that my 40 year old daughter has been off work for nearly 2 years and suffering daily with pain in her upper right abdomen and constant nausea.  She has lost 70 pounds now and much of her hair due to the fact that whatever she eats causes pain and nausea.  She had a gall bladder removal about 3 years ago and it was better for a few months but it has become steadily worse since that time.  She had a fundaplication and opening of the lower stomach about 3 months ago and it is only getting worse with constant diarhea, pain and nausea.  Dr.s have given up on her and told her, "This may just be who you are."  I can't accept that and neither can she.  Can anyone help?