I bought a figure of a girl with a baseball bat, but I don't know who of
She seems to be Natsume Reiko from Natsume Yuujinchou



Sometimes, she's shown with a baseball bat with some seals on it, which she uses to fight youkai. This is a picture of her wielding the bat:



For extra confirmation, the same figure can be seen on Amazon with 夏目友人帳 (Natsume Yuujinjou) and 夏目レイコ (Natsume Reiko) in the description.