Magic Marks the Spot
Magic Marks the Spot is about a girl named Hillary who wants to be a pirate, but the very nearly honorable league of pirates won't let her in because she is a girl. Instead of being a pirate Hillary gets sent off to Miss Primm's finishing school for deliate ladies. She snuck out of MIss Primm's and joined a freelance pirates.
I would recommend this to any girl who thinks girls can do anything a boy can do to read this book.
Magic Marks the Spot Book Trailer
Caroline Carlson wrote the Very Nearly Honorable League of Pirates book seires.