This is a link to clinical trials . Gov it is a government web site with most if not all clinical trials.
Her doctor maybe able to help her get set up with a clinical trial.
There have people who have been able to get treatment even though they were initially denied. My understanding is you need to appeal and be denied 3 times and then you can appeal to your states insurance commissioner. Several people were able to get treated by following that track. There are also groups that help people get meds
She has several reasons for appeal she is a young woman of child bearing potential and from what you said she is having health challenges from her infection that can be used as a basis for appeal
Google help 4 hep
"Help‑4‑Hep is a non-profit, peer-to-peer helpline where counselors work with patients to meet the challenges of hepatitis C head-on. Callers talk one-to-one with a real person, typically someone who's had hepatitis C touch their own life. And they talk about the specifics of their particular situation. The phone call, support and information are all provided free of charge."