@angievas1 I feel for you as you know only too well what it's like to be diagnosed and then treated for cancer. While you are being followed for Lynch Syndrome and your own diagnosis you are worried about your mother. It's make me very when I read how so many of us experienced appointments with our local medical providers that either misdiagnosed or delayed diagnosis and treatment. I'm wondering why her gynecologist or gyn/oncologist did not recommend a survival plan that included regular exams that included pelvic exams.

Is your mother still being seen at City of Hope? Is that the location of her hospital oncologist? When is her CT scheduled? While scans are frightening - at least I get very anxious and frightened when I have CT scans even when I have no symptoms - I hope that your mother's scan shows no evidence of disease and that this is a UTI. I've been advised not to use any estrogen products for vaginal dryness because my endometrial cancer was estrogen positive. There is a discussion on Mayo Clinic Connect about vaginal moisturizers that you may find helpful:

Vaginal Dryness Solutions:
https://connect.mayoclinic.org/discussion/vaginal-dryness-solutions/?pg=4#chv4-comment-stream-header
Have the antibiotics helped?