Curious if she has ever been a member ? If so does anyone know what issues she appeared in ?
I know they have teamed up at various points but I don’t think that she was ever a member. She advised them as Oracle. Not sure if that counts.
She was an official member when she was Oracle.
Oracle played a crucial role providing intel and coordinating the Justice League through the 90s and 00s. As Batgirl, though, only Cassandra Cain has been a member of a Justice League — namely, the Justice League Elite.