She's trying to put you down by making out there is something weird or abnormal about your interest.
RoyalCorgi has it right here.
I’m not sure meaningful engagement is possible when she is starting from this position.
Whatever reasons you come up with, she will be dismissive of them, because she just doesn’t want to acknowledge that this could be an issue that needs exploring.
Too invested in the groupthink line, for whatever reasons.
She’s got you on the back foot, defending yourself. Turn it back on her, if you can - ask her, as AtrociousCircumstance says, why she isn’t interested.
Why doesn’t she care about vulnerable women in prison, rape support groups, needing intimate care etc? Why doesn’t she care about safeguarding the rights women fought so long and hard for; about safeguarding children?
And why doesn’t she care about freedom of speech and democracy for us all?
She’s behaving like just another smug, sanctimonious, ignorant bigot. It might help you to remember that when you’re talking to her, rather than respecting and/or deferring to her wilfully uninformed position.