My Fiance Masturbates In Her Sleep, At Least That Is

My fiance masturbates in her sleep, at least that is what she tells me. I know it is possible to masturbate in your sleep (parasomnia), and at around 2 - 3 in the morning is when she starts doing it. I have done a lot of research and I have found all the same similar things but one. My question is, is it possible for her to stop masturbating the second I awake from this happening or is she really awake and ashamed of what she is doing...