Found my toys in my daughters (18) room, now I'm having feelings

So for background I am recently divorced (in October) and am a single mom. My daughter (18) splits time living with me and her father. She is with me about half of the week.

Recently I have noticed that I can't find certain sex toys of mine. Like they are missing and then reappear or they just never come back. At first I did't think much of it, maybe i just misplaced them. That was until I started replacing them and the new ones went missing too. I looked all over for them but could not find them. Then when my daughter was at her fathers I went and checked her room. I found them, the new toys still in their packaging and some of my older ones that never made their way back. I found them all in a drawer with some lingerie and thongs I never knew she had. Very sexy stuff btw she has great taste.

I took the toys back, but never said anything to her. I didn't to embarrass her and I was hoping she would realize that I know she has been taking them. I hid them in my room in a spot I didn't think she would find them if she tried again. WRONG! After my shower one night, I wanted to use one of my vibrators but it wasn't there. This time I got mad and went to her room to confront her. When i got to her room I heard the vibrator on and her moaning trying to be quiet. I cracked the door and actively saw her using my vibrator and I couldn't hear exactly what she was saying but whispering something to herself.

I'm not going to lie, seeing her turned me on a lot. I shut her door went back to my room and used another vibrator and got off to the thought of her. Now I have all these sexual feelings for her and want to act but am not sure what to do. It's hard for me to look at her the same right now and every time I touch myself I think of her.