Tbh I can't comment on your situation (this is close relative of mine that I am speaking about) because it depends on what lies, what you mean be self preservation and how longs it's been.
If it's been 8 years and you still bring it up I can understand them minimising it, iyswim. After 8 years enough is enough.
If it's lying about eating the last hobnob and the controlling behaviour stems from there then it's not on.
It's just so hard with vague detail.
Saying women are only abusive because of someone else's behaviour is an attempt to shift blame (which is what your partner has also done?).
It occur because of some past trauma, but it's still their responsibility to sort out.
Most abusers have something I their past that effects them. Make and female.
Some people have awful pasta (I certainly do) but are not abusers. Why that is, I don't know.