Boarding house murder

I was in this sort of boarding house/ group home and had returned from some errand with my sister Meg. We had gotten some clothes for another small family that was there and had left part of our haul with them. My sister went into the room where the father and daughter were starting to read a book before he put her down for a nap- Meg wanted to give them this top that had a little yellow bird on it, something my dreamself recognized as having at one point. I tried to stop her so we could deliver the rest of that bag to a set of brothers (this had costumes for them to play with).
From there she went outside and I went downstairs. I was searching for someone. I had grabbed some cheese sticks from the downstairs fridge and continued to make my way to the back of the basement. I passed one room with someone in it- his back was to me as he was playing some sort of game. In one corner of the main room a tv was turned on and I had paused to see what was on, and possibly change the channel.
I entered a room opposite of that to visit a friend. He was in conversation with another. As my friend lifted a sword he was immediately warned to put it down. The other friend had steppes out from the shadows where he was hiding and he looked hurt. Immortal was the first thing that popped in my mind. Tall, black and looked like a satyr, but there were two gaping holes in his upper body. I think we both freaked out- me and my wholly human friend. The other kept assuring us he would be fine, he just needed- blood. More precisely human virgin blood. What shocked me more about that mental revelation was how willing I had been to be a donator. Which outside of this I would not qualify. And actually, we (us humans) really thought he would have been ok with this as we followed him out a back door and into a group of friends.
Oddly enough the immortal sent them running around the side of the house, leaving one other person with me. She looked drugged. The next thing I know I'm being told to run by him and am around the house and into the front yard. As I make my way back I hear screaming. I start to run and almost trip on the prone forms of my friends who also look a bit drugged. Was this all a set up? As I'm trying to get them up I see a neighbor just drop his groceries and sprint to where the screams are coming from. He had cast a backwards glance at us, but I can't get a response out of my friends. Will he blame us? I really didn't want to find that out. The other thing that bothered me was how the immortal friend knew while he would have had some control, he would not have been able to stop himself completely in this case. So was I being spared or did something else just happened? Not sure since I woke up.