I really doubt this. I could see her as a Batfamily representative if she was Batgirl, but the dialogue really wants to imply that Batgirl (or a Bat-related name) isn't the best for Cassandra.
I could see her with a totally independent alias in an independent team from the Batfamily, but it will be weird, since she just recently is using the bat symbol again.
I guess we will have to wait to March.