I believe Claw (maybe 2pac) had a solution for auto-squelching. Ask them?
The channels are logged, is there no way to do a simple search specifically for whispers between two players? Alternatively Bs can make a few screen shots and share them here. Without proof this just cannot be taken seriously whatsoever. Seems a lot simpler than writing all these novels or making fun of one's self in front of the police.
Also, making a new ID and only telling about it to certain people should solve the problem...
Besides, Bs herself has a put a significant amount of effort into publicly talking trash (to Tk for example). "Alcoholic husband of a whore" imo is worse than Van's meaningless spam of curse words so... If you're addicted to drama, then learn to handle it!
If anyone is going as far as Bs states, then there must be a reason for it (certainly with Van). Care to share?
Regarding the reference to LoL and Riot games, wc2 players have always all behaved like angels compared to that "community". This easily includes Van (I'm aware he's had terrible behavior tho). I know this from experience.
There were female players (for example from Croatia, xSarax). I don't remember them having had such problems so I highly doubt "I'm female therefore I am subject to regular harassment" is a valid argument. The problem is your attitude.
Anyway... simple:
New ID / Auto-squelch from Claw / Gather screen-shots instead of talking shit and send them to the admins / visit a therapist and learn to ignore what is meaningless, and care for what is important.