<human>: Can you condense the text into a few key points?

This post might belong on /r/sex but I think its better suited here and I prefer your guys opinion.

After a year with her I can tell she masturbates almost every night on and off through out the night for hours, usually 20 minute stints. She's not obnoxious about it, actually very quiet and honestly you d never know if you were the one laying next to her. I really wonder how much sleep she is actually getting, which kinda worries me. Its hot sometimes but there's no way for me to "jump in" because she denies it and other times it just frankly weirds me out. Shes on the computer alot throughout the day and I can tell she does it throughout the day quite alot too, even when were cuddling and watching a movie she does it. Ive asked her about it, caught red handed too lol but she completely denies it. Im not trying to control her fyi. She's my first girlfriend so I don't have much prior experience to know about these things. Just want to know what you guys think of this behavior? Btw we do have sex pretty often, 3-6 times a week.
<bot>: Girlfriend of year masturbates all the time and especially during the night. Just want to know what you guys think of this?