“The Rema adds that the portions of the Torah she’bksav that are relevant to women, they should be taught the simple meaning of, so that they know what to do when situations arise in life that affect them.”
The Rama can’t possibly mean what you seem to think he means. Anyone who has ever learned a little chumash and a little halacha knows that the “simple meaning” (I assume you mean p’shat) of any part of Torah Shebichsav is highly unlikely to give anyone solid direction in order for them to actually “know what to do when situations arise in life that affect them.”
Knowing what to do in situations would require them to learn halacha – and I don’t mean kitzur shulchan aruch. Shas and poskim are what you need to understand when something is an issue and how to resolve it. And these days, for women to learn those areas of halacha that apply to them would likely include everything a man learns (after all, women are involved in the kitchen, work outside the home, give tzedakka to the collector at the door, do homework with there children, go to school, engage in business, ect), and more (since women should probably more well versed in hilchos niddah than men need to be).