I just checked the website and they are recruiting for a clinical trial (stage 3& 4) in Anchorage. I know you said you are in a rural area, but this may be the closest one for you and your sister. Read all that may be available, though. I was anxious to get back to you and stopped at the first one I saw that had Alaska listed. I search: Ovarian cancer and Alaska. That's how I found it.
Angie
check out this website http://www.clinicaltrials.gov/
It lists all (not just for Ovarian cancer) clinical trials going on in the USA. And, keep checking it from time to time. Good luck and I hope the very best for both of you.
Angie