I don't know where you are in NY, but I would recommend contacting Dr. Kunle Odunsi at Roswell Park Cancer Institute in Buffalo, NY, who is in the process of doing several different ovarian cancer vaccine trials including one for women who have recurred. I did the phase 1 trial of the NY-ESO-1 vaccine and I am still in remission 3 - 1/2 years later.
Dr. Odunsi is an outstanding gynecological Oncologist and a very caring and compassionate man. He is an excellent surgeon. He does a lot of research on ovarian cancer and may be able to help your mom with some ideas on new treatments.