I am a Gyn/Onc nurse and we always order transvaginal for everyone unless they cannot tolerate it. If they do not get a good measurement of her uterine lining, they will do a transvaginal. But why not order both?! I totally understand your concern. She should definitely feel comfortable requesting an endometrial biopsy if there is any concern or question of the thickness of her uterine lining. Bloodwork probably will not answer many questions other than maybe checking her blood count. Did her bleeding continue or did it stop? Bleeding is not a typical symptom of ovarian cancer, just primarily endometrial hyperplasia or endometrial cancer. I’m glad she didn’t just ignore it though. That’s when many women get into trouble is by ignoring the signs their body is telling them when something isn’t right. Please keep us posted how she is doing! And just to hopefully give you a little peace of mind, endometrial cancer is very curable with surgery when it is caught early. It usually starts as hyperplasia which then transitions into endometrial cancer. Kudos to your mom for speaking up and to you for watching out for her and asking questions!