I'm sorry to hear about your friend. Does she have a treatment plan?

Cancers of the cervix, vulva, and vagina are associated with infection with HPV (human papilloma virus), which is sexually transmitted. HPV doesn't have anything to do with endometrial cancer. However, two factors that are known to increase risk for endometrial cancer are never having been pregnant and being overweight. A paper from 1969 that I found on Google says that 63 percent of gynecological cancer deaths in nuns were from uterine cancer.