My mother was very emotionally abusive to me and my brother when we were children.
She was angry all the time. She would insult us, shout at us, and call us both fat. She especially called my brother fat all the time. She was more abusive to my brother than to me but she was bad to me too.
She would isolate us. She had us living out in a house in a remote country location. You couldnt walk or cycle anywhere from it as everywhere was too far away. And then she wouldn't bring us out to much places. So practically all summer we would be sitting out there in that house doing nothing. She would once a week bring us to our aunts. But I remember 6 of 7 days of the week sitting in that house. We were far away from any other children. It was too far to even cycle to a shop. It was so boring and isolating. Add to that her being angry and screaming at us all the time. We felt totally trapped out there
My brother confronted her about this recently. I know because my mum rang me and said "your brother was horrible to me. I thought I would have a better kinder son" and she told me what he said. He said that she was a terrible mother and that she had been abusive.
I then said to her "well you were horrible to him when he was child. Why would he be nice to you now. You get back what you give out".
She said she hadn't been abusive. I reminded her of several things that she said. She said "I neve said that". She doesn't remember anything.
I suppose the person that does the abusing is not going to remember it as clearly as the person being abused. It didn't cause her pain so she doesn't remember it clearly.