Feeling Really Guilty

My name is Katherine I am divorced and I have a sixteen year old daughter. I have been divorced for three years now and I get lonely sometimes. I have not dated anyone because it's been so long I'm not sure how to interact with another man. It's been a while since I had sex with a man who's not my husband. So I masturbate every night to satisfy my sexual needs.

One late night I got up to get a drink of water, and as I walked past my daughter's room I heard noises, which is strange because I thought she was sleeping. I peeked into her bedroom and I saw my daughter fully naked and masturbating. She was grinding her hips and rubbing her clit. I can tell she was trying not to moan too loud because she was biting her bottom lip.

As she continued to rub herself, I was surprised that I was getting really horny watching. I could not resist it anymore, all I had on were a bra and panties which I was able to remove quickly and I started to rub my pussy with one hand and pinch my nipples with the other hand. Hearing my daughter moan made it more exciting and watching her have a full orgasm made me cum right away.

As soon as I finished I went back to my room. These past few days I have felt really guilty about what I did. It feels strange that the best orgasm I had in years was by watching my daughter masturbate. I have thought about telling her about what I saw and did but it would be too embarrassing for the both of us. Now whenever I masturbate I can't help but think of my daughter. If there are any mothers who read stories on this site, feel free to give a comment or advice about my situation and what I should do.