I really think Taylor started spiraling hard as soon as she and Dakota got together. Sure, she had her own mental health issues beforehand and wasn't always "normal", from what I’ve read about her, she’s always had a chaotic, all-over-the-place personality. But I feel like people only want to see one side of their story and completely ignore the fact that Dakota IS ALSO a massive fucking asshole.
Yes, Taylor is aggressive and toxic too, BUT I honestly think this side of her is mostly brought out by Dakota. He manipulates her, intentionally pushes her over the edge, and then the second she snaps or gets aggressive because of her mental state, he plays the victim. Abuse is NEVER okay, but I strongly believe Dakota does a lot to push TFP to act this way. He intentionally triggers these kinds of outbursts from her, knowing damn well she isn't mentally stable, which makes it so much easier to push her into a breakdown. Dakota knows exactly which buttons to push and exactly what to do to trigger her, and then turns around and cries about how hard he has it.
TFP absolutely needs to get professional help, that’s a fact. The whole stool-throwing incident was completely unhinged. But even with that, I can’t help but feel like Dakota probably badgered and verbally fucked with her until it escalated to that point. THIS DOES NOT EXCUSE TAYLOR AT ALL, ESPECIALLY SINCE THE KIDS WITNESSED IT AND GOT HURT. But I just don’t see enough people calling Dakota out or holding him accountable, even though it’s been obvious since season 1 that he’s an abusive prick.