If you were abducting Danielle from UPSTAIRS, why would you be looking downstairs to see if the coast was clear? Wouldn't the people you feared would see you be upstairs? I would assume that this was after everyone had gone to bed.
Good question. Would that mean it happened before the pizza party guests returned at 2:00am?
If you were on your way out with Danielle, you would likely have already assured yourself the upstairs hall etc. was clear and would be checking a route ahead of you.
That being said, I'm not fully convinced she was stealthily taken from her room in the first place, but if she was, it could explain the position of the hands on the rail.
Please feel free to jump in with another possible explanation of the hand positions.
I know I'm certainly open to other possible scenarios.