This pair are both deranged IMO. I think they were obsessed with each other from the beginning in a totally unhealthy way. He never has to take responsibility for anything he does because he has the money and people to sort out anything and everything, he's incredibly entitled and smug - when she said he had cocaine in a jar on the table, a jar of cocaine and he's smirking to his lawyer like 'a jar of cocaine?? does she know who I am?? Why would I keep cocaine in a jar when it could be in my wooden skull and cross bones box with my initials on?' He just came across as a prick, he often seems insincere and as if he sees it all as a joke, and he minimises his addiction. It seems he was extremely jealous, controlling and some of the messages are just full of abuse and appalling language directed at her. Everything is done to try to discredit her.
She on the other hand is very keen to look like she was the innocent, loved up victim who was just begging him to change and always believed and had hope in him. I found her extremely plausible and coherent as only the best liars are - narcs are brilliant at this, they learn all about you and then use it to their advantage. She will tell almost all the truth to make it entirely believable, all the little details that she can to make it sound like the truth and then it makes it very difficult to spot the lies in amongst it. I recognised a lot from what she said he did too - him saying he'd rather lose a limb than lose her for example, I'd say that was pretty typical narc on his part as was idolising her then devaluing her and then the cycle begins again when he realises he might lose her and begs forgiveness. Also his refusal to even look at her, that's to let her know how worthless she is IMO, he can't even stand to look at her.
I felt that the story she told about the wino tattoo was plausible, but was it true? I thought she was probably lying when she said she was laughing about it innocently though as I think things were probably already bad at this point with arguing - I suspect she was probably laughing at him in a 'yeah you are a fucking wino, couldn't be more fitting' way. Or if she is telling the truth (impossible to know!) then he took it that way. As a result I believe he was probably violent - but did he smash the place up or did he slap her as she says?
In conclusion I'd say they're both typical narcs and so are both extremely manipulative and good liars. I would not like to be the one trying to find the truth in this quagmire of abuse. Did he ever hit her or did he only ever break stuff? Fuck knows.