Here's a model.
Someone is being abused by someone they love.
The abused person loves the abuser unconditionally.
It is then better for the abused person, because they like being with the abuser.
Okay no, wrong, 1000 times wrong.
There is so much published to explain why this happens, they do not enjoy the abuse so much as excuse it or see it as familiar. When asked scenario questions they tend to not even perspective-take properly.
A lot of it tends to be the Hot-and-Cold treatment, where their friendly side becomes a reason to weather through the bad side to the point of excusing heinous things, even potentially self-blaming for "provoking" it.