Please have her get a second opinion....
Hello,
Such pain after endometriosis can be due to adhesion formation after endometriosis surgery or even recurrence of endometriosis. Symptoms of endometriosis include pelvic pain(usually before menstruation but sometimes during intercourse,urination or defecation), sometimes diarrhea or constipation,irregular or heavy menstrual bleeding,sometimes blood in the urine and inability to conceive.
Get it evaluated from a gynecologist to confirm the diagnosis.
It is very difficult to precisely confirm a diagnosis without examination and investigations and the answer is based on the medical information provided. For exact diagnosis, you are requested to consult your doctor. I sincerely hope that helps. Take care and please do keep me posted on how you are doing.