i think bani will act as if she wants the abortion...and possibly side with Pia, however right at the last second she will walk away from the clinic and realise that this is her child too...and thus cannot end his/her life. She will try to go through with abortion just to get revenge on Jai but will decide not to at the last second.
Or, she will tell Pia to stay out of it...that she knew what she was doing...and she is equally to blame for what happened.
Either Bani's reaction to the whole abortion will last for a few more episodes at least.