Yes, local law enforcement doesn't ever seem to get the credit they deserve. In this case, they probably saved her life. Prayers all the way around on this one.
They did an excellent job - dividing their time to hit two places at once - actually getting to the source of the janitor's ID - contacting the employer (after hours) finding out the other locations of his jobs was a great BIG clue - and I think they knew it the moment they found it out.
It was truly a great job - and I agree it did save her life.