It's written all over her face. Even if a mouse were six inches tall wearing gold chains and medallions and flashing gang signs, she smack that dude into next Tuesday. Also? Excellent camera skillz. Also? She tolerates me.
She will let people pet her, but we warn them to watch her carefully because she will smack you when you've gone too far. The signs are subtle. This one got smacked around a few weeks ago and when she did, she made a face like this because it was unexpected, which is what I mean when I say subtle.