Our cleaner only did 1 hour and 20 minutes when I pay her for 2 hours. She doesn't realise I have a ring doorbell and majority of the time I'm working from home so I know when she arrives and leaves. However, I'm away for work and she is aware of that. I caught her arriving at 11:33 and leaving at 12:53. I'm obviously really pissed off about it. Do I mention it to her and let her know I can see her or just send her half of the money? She left 40 minutes early.