Complete faith in the City of Charleston Police Department, that they will get to the bottom of it quickly. They are being way too hush-hush about everything. And I am not sure where you live, but here in the Charleston area, I have never heard of a home invasion where the person is beaten. There were also two smaller kids in the house at the time, so why would they take the oldest child? It just all stinks a little.
RBBM
Maybe the perp was afraid H would be able to remember too much and be able to help LE catch him, if left behind ...? IIRC, one of the two younger siblings is only a few months old, and the other one two.