Thoughts on this would be Punisher?
Should have been given a one-shot or annual or something that showed her punishing on her own in Hollywood.
Going by Wikipedia (https://en.wikipedia.org/wiki/Rachel_Cole-Alves) she showed up in the last series and a game, so it looks like she's not totally forgotten.
I always thought her origin story was pretty funny. It's even more extreme than Frank's, for one (her dream husband and literally everyone she knows gunned down at her own wedding). Luckily though, Frank Castle is there to teach her a healthy coping mechanism!
Lynn Michaels was a vastly superior character.