I don't seriously color CM as problematic personally, but I do see reason to wonder. (In my wondering, she and her family still didn't deserve any of this, that's for sure. But still....)
At least by appearances, she willingly put herself in really bad situations. That raises a huge red flag.
(From what I think we know) Her bf HF apparently was a drug dealer, and has now been arrested. And she landed him, by (if I understand correctly) cheating with him on a different bf. Was the prior one a drug-related guy too?
Those are activities we know about, and could be giving the wrong picture, but on the other hand they could be just the tip of the iceberg. Maybe they show bad judgment/immaturity, maybe it was emotion or neediness clouding good sense, or maybe it indicates there was a darker side. It's really hard to tell the difference.
So I'm cautious in assessing what she might or might not have been doing, and willingly, that night, because it's really hard to know.
I'm certainly not trying to bash on CM in any way, that's for sure, but just relating how we have to open that maybe SHE made some choices that we're overlooking. If (and only if) there are facts that point in directions we wouldn't expect ...