Well, I'm willing to bet that no feminist ever called her biological father, "Mommy!" So, if one imagines herself a "Christian", why would she insist on calling her spiritual "Daddy" anything but "FATHER".
You are entitled to your fundie inerrancy, infallibility theories, and the absurd literalism that they involve.
Your statement that feminists "aren't Christians" is ridiculous. I suppose that it is okay if you don't like female people, but what they do in any personal area, such as religion, is none of your business, and feminists just might be judging you the same way. Mind your own business and leave other people the hell alone.