The strategic calculus of filing a lawsuit like this scares me. You're ALREADY partner at one of the very best firms. BEST case scenario you make a huge amount of money in an out of court settlement and then hopefully somebody else hires you. Maybe you start you own firm.
I have to imagine that things were really bad for Ms Pao. Or at the very least, she must certainly felt them to be.
Perhaps she's interested in retribution via soaking them for a ton of cash, but I can't help but doubt that. It's hard to imagine she lands in a better place, career-wise.
A truly difficult situation for her and KPCB.