Watch and wait a while.

There isn't much longer until the library is open, so you decide to just soak in her embarrassment and excitement just a little. Your suggestions so far seem to be paying interest, because she slowly turns more flushed as time to open approaches, along with a somewhat mischievous smile as she gets ready to unlock the front door.

There's a little hesitation at first, her fingers twiddle in front of the lock a few moments before she finally opens the door. The click quickly raises some attention outside, someone has been waiting for the library to open, eagerly stepping in as soon as the door is unlocked.