"वह एक पुस्तक पढ़ रही है।"
अनुवाद:She is reading a book.
Exactly, 'to study' and 'to read' is not same. One can read newspapers, notices, words but study is something serious that. It doesn't always need reading. One study physics, science, arts etc. You cannot read Science, Physics. If you say someone is studying a book then it will some is doing something like research on the book.