OK, so it seems like JO was stringing along KR, using her to babysit and whatnot, while out partying, and she couldn't because of her health issues, and supposedly banged someone else (whether he did or didn't, KR believed he did and it's not a unreasonable assumption) and KR was in a rage over that, calling and cursing him out on voicemail? And KR was flirting with Higgins, presumably to make JO jealous?
I'll buy that, seems pretty believable. But all I'm seeing is a woman who did some crappy stuff to try and keep an apparently crappy BF and a BF who's apparently taking advantage of his sick GF to use as a sitter and provide a home life while he's unwilling or unable to dial back his partying and goes to a after party with friends instead of going home with his GF, who he uses as a sitter.
People being people. I've unfortunately seen worse.
But I still haven't seen the state make a strong case that proves murder.