Dinah tried to figure out how to answer Bruce's questions. She didn't know how this situation would go if she outed Enigma now. Not to mention that she realized that the young woman had at least kept her safe while she'd been drugged. She wanted more of a chance to figure out what Enigma was capable of and if she could be brought back to the right path. Granted, the girl's time with the Titans hadn't gone well, but there was a chance that she could be redeemed.
She glanced from Bruce to Enigma and then back again.
"I got dosed with a fear toxin. Enigma brought me back here to keep an eye on me." she frowned at the information about the vampire and looked her new friend over. "You met a vampire? Are you okay? What happened?"