First off, I thought this was just a fictional story without an aformention of such.But after reading all of this, I've come to a decision/opinion. And first off: yes I am a girl and have had sexual things like this happen to me for VERY brief periods of time. The reason that they were brief was because it may or may not have been an accident/paraprax by the 'assailant' for this so called minor mistake they made, or they may have been testing the waters to see how far they could go. I'll never know.
But what I DO know is the other reason of why these little 'slip-ups' were so brief. I immediately jumped away and either slapped or punched them with vigor. I see ANY close, physical contact as an intrusion, and a violation, of my personal space. The same belief would be held by the vast majority of women, as all men don't fit the stereotypical view of a utopian man, and others simply aren't as rash as that either. The same could be said of men. Now I know I'll likely receive a gross contradiction, but honestly, would you want someone to pounce on you and start all touching you and everything if they were an old senior, a fat person, or any other person that at least doesn't partially fit into everyone's preconceived notion of beauty, attractive? And if you do feel comfortable with anyone at all tickling, or touching all over you (more so, one main area), all the more power to you.
And also, why would you do that to someone you know is mentally unstable (assumed as such since an in-practic psychologist was needed)? For all you know, they could have gone ballistic on your ass. Or even worse for you in the long run, sued your butt, or charged you or filed a complaint which would likely get you fired.
And don't go saying that since they're 'crazy' their perception's off and their credibility flies out the window. Working in a hospital, constant video surveillance is highly recommended, likely mandatory in a ward prone to suicide and suicide attempts.
I think it was a GROSS violation of their personal rights, irregardless on whether or not they ended up enjoying it in the end. They were unconscious, and thus inxapable of giving you any verbal or non-verbal cues showing that that act might be seen as permissible, or okay.