He had one job.
one job that he had been failing miserably at.
But no one else would take the job if they knew what it was, and no one would be allowed to do it. No one had the stomach or patience for this job. The job is to take care of the Wayne family. And not many would survive it or come out with their mental flaws in check. This was his job, and he would not stop until he was dead.
He owed it to the family to try and keep one of them sane.
He thought he was doing her a favour by getting her out of the manor for a couple of hours. At the same time, he could conduct some background checks on people he suspects. He did not think that it would escalate into a situation like that. Someone is paying to kidnap the latest Wayne kid that was adopted and hold them for ransom.