I had a session with her some months back. She nearly cancelled on me but said she could do the session at like 1 am. I didn't want to risk not getting my deposit back so I said yes. I won't lie, the session was a good time, but definitely didn't love getting nearly cancelled on then having to drive to her so late at night. Especially with work the next day. In the session she was great, but I would be weary of booking with her.
My guess is she set that time thinking you would not be able to make it work. You called her bluff. Good for you!