Yes, I agree with your daughter, however, I would add, my first reaction to you being more disabled in the dream than you are actually is that you would be "confined" to watcher status, have to see it all, not be able to get away or run from what you saw/knew?

Your daughter's Bart Simpson inner child thoughts put me in mind of how many opposites and extremes you have here in this dream? You have an "all-or-nothing" dream, basically. Extreme psychological problems but you're in a mental hospital. Extreme physical problems, barely able to leave the bed on your own but you checked on the girl in the bathroom and screamed (at the top of your lungs, no doubt :-) versus the quiet of her chopping and only seeing the fluid seeping under the door? Serious news to impart, but it's done as a joke.

My Therapist (or someone, she later said she did not recall saying it) had to remind me that "a wet towel on the bed is not a murder" because I did not differentiate between the two; anything/everything would bother me/make me angry? I had no thermostat settings, no way to differentiate degree of anything. Your dream kind of reminds me of that in that you have the worst of the worst of the worst going on?

If it were my dream; I'd look at the act in the bathroom as being "internal" to me; you chop yourself or your self esteem to pieces with your internal dialog and beliefs? Interesting too, that your physical body was in so very bad a shape and then you have the bathroom scene for your interior and, perhaps the internet idiot is your "exterior"/world part? Sounds like you think/feel you are a mess all around?

Which section "attracted" you the most? Again, the red/blood at the "heart" (bathroom as heart) of it all, I think I'd work on my self esteem? Either that or you "bleed" for others too much? You don't take care of yourself enough, give yourself away for others (the internet idiot broadcasting it). And, if doing for others, you don't feel appreciated (internet idiot's joking attitude).