Well the only way you can ask this question seriously is if you're saying that a mother can't be a feminist and a feminist can't be a mother. There's mothers who are conservative, liberal, anarchist, atheist etc. and all different races from all different countries and in all different kinds of situations. The way your question is set up just assumes one thing over the other, which has no real bearing on anything in reality. It's like looking at porn and thinking everyone has sex that way or something, it's just not a thing.
Also, to be honest, I protect the right of women to sleep around with who they want because men have done that for centuries and also made up reasons for why women can't act like how they act which I find hypocritical at best. Men say "women act badly because they wanna be like men" but if women act badly are are like men, then are men saying that other men therefore act badly? Is this a confession?
Even if men didn't do that, you act as if there's an alternative. How do you enforce women not sleeping around? The only way is through authoritarianism and making up a whole bunch of rules and regulations around sexual urges and stuff. I've seen what happens to countries with porn banned and a nice black market trade in sexuality with an open red light distract and more sexual trafficking, no thanks.