When one of them asks where the new Demon's Head is Barbara raises her hand and shines her light at them.
Later, after Penguin is arrested, Barbara and Tabitha head back to the Iceberg Lounge that they now own again, decorate it and officially reopen it as The Sirens Club again.
The two took Butch back to The Sirens and Barbara insisted that they hand him over to Penguin but Tabitha, who still had feelings for him, asked why he would turn on Penguin now.
Barbara asked if she needed a hand but she simply told her that she had it.
Barbara and the other inmates were later sprung by and offered the chance to become a group that would terrorize Gotham.
He eventually gave her the combination and she realized where Tabitha and Butch were being held.