This is going to be a somewhat in-depth article, with a deep look at the full (i.e., millennia- and civilization-spanning) history of feminism.
The purpose is to give you a broad, complete, and meta-view of what feminism is, how it arises, and what its function is in a civilization, so you can break out of male-female power struggles and get the women in your life to take a sweeping historical view of feminism as part of a natural cycle, rather than a more basic/low level "Fight the patriarchy! Permanent progress for the first time ever!" view.
Before we get to the real history of feminism though, first let's talk about why you'd need to talk a girlfriend or wife out of feminist leanings.
No matter your political beliefs, it is a self-evident fact that there is a certain branch of feminism that is toxic to male-female relations.
Some feminist views are fine, and not all of it is bad. However, there is a very vocal chunk of it that is acidic to happy relationships.