>Once bound and gagged, perhaps he would stun her
>so she could be carried out with no struggle?

Once bound and gagged, how is a 45 pound, six year old girl who may not even yet have fully awakened going to struggle against a grown man? If bound and gagged in the bedroom, a stun gun might be 'fun' but it would also be noisy. Perhaps not a great deal of noise, but more than would be wise to make under those circumstances.

I'm thinking more that the bound, gagged and stun gunned took place in the basement, or atleast the stun gun use did. If she was gagged at the time, then the stun gun was not for the pleasure of hearing her cry.