Holly's friend Olive had posted that Holly had finished a course of chemo (or radiation) a couple of months prior to starting her Leronlimab treatment.
If I recall the story correctly, right about the time she started Leronlimab, her oncologist discovered her cancer was spreading again. They needed to immediately resume with the radiation. Seem's Holly's cancer had gotten very advanced. She may have been very, very ill by the time she actually started on Leron.
As far as your question goes, she was in a downward spiral before Leron really started. She's a figher though, and has actually just been released from the hospital again! Her strong spirit, her support group including her doctors, and just possibly Leronlimab are all there is to have kept her from sinking beneath the waves so far. I know your not a believer, but what will you say if she recovers fully?