Cassandra is Batgirl
My only exposure to Cassandra as Batgirl has been through this series. To be honest I didn't know what to think of her as a character. The concept seemed cool but how do you have a successful book when the main character doesn't talk? My concerns however were unwarranted as this series has been a pleasant surprise with each issue.
One thing I really liked about this issue is how Batgirl takes on the unnamed meta-human. Just by looking at the cover you know that she doesn't have much of a chance. A girl her size is going to have a very difficult time against such a large opponent. No matter how skilled. Batgirl comes up with a strategy and takes on the behemoth. She even thinks about it in her way. This is sometimes done in as few as a one panel flash backs.
This is a really good book. The series has been excel ant as well. I gave the book four stars and would recommend it to anyone.