Listening in

Well what a start to my morning, I had the day off work and decided to have a lay in for a change. I woke up about 9,30 thought I better take a pee walking up to the toilet I got level with my daughters bedroom and heard noises coming from her room,I didn’t take much notice to start with took my pee and headed back to my room to chill out and read my book. Again when I get level with my daughters room the noises were still going on but moaning now,I stopped to listen in the door was slightly open obviously she had forgotten that I was home all day. I know it’s wrong but I had a quick peek to my amazement she was finger fucking her pussy so hard I thought she might damage herself, she was really wet I could hear the sloping.
Now should I stay or go I took a second look to see her take her fingers out her pussy and start fingering her arse this from a 15 year old, it was then I thought this is wrong and left her to da what ever she wanted to do to Finnish off.