Jenny turned to Eleven and gave him an annoyed "Shh." He thought he saw an enemy and he started talking? Did he not realize they were supposed to be sneaking in? Honestly. Next Rose would start wailing again and it would be like putting up a giant 'WE'RE BREAKING INTO YOUR HIDEOUT!' sign.
Being here again, Rose couldn't help remembering the Doctor's hand being ripped out of hers. She took a deep breath, trying to push down that panic. For just a moment, a small part of her wondered if she shouldn't have come. But that was ridiculous, of course. She needed to be here. The Doctor needed her to be here.
Without really realizing what she was doing, Rose reached out and took the Other Doctor's hand.