Apparently the "academic women bloggers" are writing advice to young girls.
There's lots of good advice, though some of it is frivolous. What I told my sons when they were preteen and through their adolescences was that this is a great time to learn how to manage feeling bad. What helps when you're angry? What helps when you're sad? How can you take care of yourself when you're ill?
Maybe it's happy music, or a favorite book or movie. Maybe it's a walk outside. Maybe it's cleaning, maybe it's cooking, maybe it's eating a favorite meal or treat. Figure out what makes you feel better and keep it in mind for when you need it.