Using the TA-D Method, I can easily pinpoint the insider. Please note I'm just throwing a dart to a board here and hoped it's correct.Don't you dare let anything happen to our girl.
Whoever this new adversary is, they knew enough about the perpetrator's past grudge to use it against mc. An insider?
She’s 18Inspector gives whistle to 16 year old
Immediately learns why you don’t give a whistle to a 6 year old