On the Kayla of it all, I've tried to break it down for my own clarity.
TL;DR: There is indeed a lot of smoke but I could still go either way. Nick has an evil genius for bringing people down with him. Personally, I do not believe she led the way. High possibility that they're dysfunctional co-conspirators in their mutual downfall.
Verified:
Glam pic, bottle butt pic, naked at Hedonism beach, bad tats, former cheerleader, StarTrek fangirl, packs the family calendar with activities, disorganized house, 3 miscarriages (it's hard to imagine 3 tats for them if it wasn't true), 5 births, recent weight loss, enjoyed LOCALS fans sending her sex-wear, once pedaled CBD lotion via an MLM (often forgotten - it's from her first or second appearance on his show), has gone dark on SM in recent months.
"Verified" Via Nick [a proven unreliable narrator]:
They fostered kids before having live babies, she completed an early education certification to home school, she's an introvert and either ADD or ADHD, teaches younger kids at the co-op, insists on weekly Friday family trips to the chiropractor, leaked DM from Faran that says Kayla wants to swing (told to Faran by Nick when they were both drunk), partook in the Balldo, enjoyed sex toy shopping, organized the topless Gay90s night for his bday, goes to sleep early (hence kids interrupting his streams), over-shops, very religious + annual bible camp, she's been upset at how Nick characterizes their relationship and family.
Noise & Gossip:
Pharmaceutical abuse, sex with Drex, groping Warski, sex with the Jamaican bulls, upset about Nick's cooming over Mandy, significant plastic surgery.
Disclaimer: I came up with this in 15 min and from memory. I can't guarantee completeness or 100% accuracy.
Edit: Words & punctuation.