Typically, yes they would. But if the girls came in late and had been drinking, they may have not been thinking very clearly and just wanted to get to bed and left a note so that Sherrill was aware of it since she was possibly sleeping. Just a thought.
Also, It looks like there are neighbors close by and I would think that a glass bulb falling and shattering would make a pretty loud crashing sound. If it happened while someone was being forced out of the house, in my mind, a neighbor would have heard it, got up to investigate, and called police as someone is being forced into a van. On the other hand, if the house was being staged, a neighbor got up to investigate and saw someone outside the house who looked comfortable enough to go in, they would have thought nothing of it and went back to bed. I know there is no way to tell what really happened or in what order events took place but these are just some thoughts on what I think could be possibilities.