Even if she does, I can't blame Babs for not waiting before trying to make her retire. Spoiler's been in the game for years, was on the scene before Cass and will probably only start to improve and show some basic ability after Babs starts mentoring her.
Everyone acts like Babs is being a bitch, but it's not at all hard to see why she's doing what she's doing, and why she's right.