I don't know what the truth is but I've made some observations.
By default I believe that his behaviour while drinking and doing drugs was emotionally abusive. I have been in a relationship with someone who was a gambling addict and whilst it's a different type of addiction, I know how it felt to be treated in the way I was treated - a total head f* and I felt emotionally abused in many ways, desperate to escape but feeling trapped. I think that being in a relationship with someone who is a drug addict must completely wreck you - add in a bit of celebrity status and it must be maximised. I hope that she's getting counselling and support for what she's been through as I imagine it's mentally impacted her.
There are some things she's said that don't make sense to me. Her account to me seems mismatched to the audio recordings. In some cases it feels as if she is trying to goad him. It's also not clear to me why she had so much alleged evidence and then waited so long to use it. In one of her recordings she says "how do i take it back", I'm not sure why she would say that. It's also unclear to me why she would instigate a meeting with him in San Francisco when he was not supposed to be near her. In the court she backed away from him, behaving as if she were scared, but went to meet him alone in San Francisco. I'm curious about these things as they don't make sense to me.
Without considering whether either of them were abused for a moment, her accounts seem strange and manipulative in some cases.
I have a family member who was sexually abused for a long time, quite seriously at a young age and when they talk about it, it takes great effort and they are very withdrawn. I'm sure without a doubt that how people deal with abuse varies from person to person, but its very difficult for me to watch Amber speak so openly and fluently in such detail and understand how she is able to do that.
I believe they were both emotionally abused by the other but I'm not too sure about the physical abuse. The strong views from people that someone is abusive before a verdict has been given (whether they be male or female) does concern me as equally as it does at the thought that she or he might be lying. I personally think that whatever the outcome of this case, it won't do abuse victims in general any favours.