At 7pm I took her back to the newspaper office and let her out of the bag. She scampered all over my arms, onto my shirt, back down to the bag, and then did her wing stretches. After 10 minutes of that she launched.
I watched her zoom around the front of the newspaper office before disappearing up the dark alley in front of me. A few seconds later I saw a bat swoop on the moths flying around a lone fluorescent light at the end of the alley.
I only had her for a few hours. Oddly enough she wasn't totally pissed off at me, which was a nice change.