"Unfortunately, your W may have unknowingly learned a lifestyle from her mother that she's now repeating in her adult life. It may feel normal to her."
This is very true. My W's younger brother remembers things that went on in MIL & FIL's divorce, so I know my W has to remember a lot (probably more) of it too.
My W really needs help. The guy is a predator and the future will not be good for W.