Interesting. I stayed in a very abusive marriage for ages because I was so confused about what was actually happening. Stbxh was very good at all the gas lighting and rewriting history stuff, and in the end I didn't know whether I was coming or going, and actually believed me when he'd talk about 'my anger problem' and how I needed to do x, y, and z to make him happy and save our marriage... it's incredible that I fell for it really, but I guess that shows how an abuser can mess with your head and end up controlling everything you do and think.
'Luckily' he increased the abuse one too many turns of the screw and even I noticed that it didn't make sense. Clearly not my fault for getting injured when I 'made him' throw me across the room by my neck. Obviously im being somewhat ironic calling it luckily, but in a way it really was, as it made it so clear to me that I wasn't the evil abuser he said i was on that specific occasion, and it gave me a tiny bit of clarity to cling onto and slowly I appliedthay fresh perspective across all parts of my life. The 'anger problem' I apparently had was the only big of me still working correctly at that point... it's ok to feel angry when someone behaves awfully to you. But now I know that you also should never accept the situation, but end it somehow so you aren't having that anger all the time. My anger was a clue that I should have acted on, vs a character flaw I needed to repress.
Following the power is a really interesting way of identifying the abuse, but it's not always obvious. So in my case stbxh was very good at looking powerless whilst holding all the cards in reality. Poor ickle man needing help... except that help never actually helped and you could pour all the love, money, time, effort, health into his gaping maw and it would never be enough to 'help' him. He took and took and took, and I gave and gave and gave. And he abused and abused and abused whilst demanding ever more incredible acts of giving to satisfy him.
So, the unemployed/ non working partner doesn't always mean they have no power, for example.
Humm, haven't thought about this for a long time now. Thank God I know I was never the abusive one now, it really floored me at the time.