All day yesterday a squirrel scrabbled around on the screen of my basement office window. She(?) was still there this morning, then left that screen to come down the adjacent stairs to my basement door, and is currently between that door and the screen door (screen door has a big hole in it). I looked at her through the glass door, and when I came back she was still there but hunched into the corner and harder to see. She may not be fully grown, but I'm no expert. She seems fully mobile. I don't know whether she has had anything to eat or drink or left at all during the night.
Should I leave her alone? Put out water? Food (what kind)? Try to trap her and bring her to a rehabber?
Thank you!