Let go....
whats happening is exactly whats supposed to happen. Maybe she will return to researching her disease some more...maybe she will begin development of recovery. Let it unravel the way its supposed to.
Thats how people get sober, and no other way.
How can it benefit you to know who bailed her out? How? Not your business. Let it go. Cant control it, but you can kill yourself trying.
Hang in there...focus on you today!