I just read A Girl Like Her by Talia Hibbert, and here’s what’s surprising: the heroine had her period. It shouldn’t surprise me, but it does. And that’s because I can’t remember the last book I read where the heroine menstruated. Can you? I’ve always wondered why. Why is menstruation rarely referenced in books? There’s the argument that that time of the month is as routine as urinating or brushing your teeth, and since it’s mostly assumed that characters do those things, they need not be mentioned. It’s a somewhat compelling argument, but it’s not nearly enough.  Sure, there are people who breeze through that time of the month. Perhaps…