Vince trusted that Manny would keep an eye on Riley, in ways he didn't trust the other girls. He knew that they would check in on her, but he couldn't expect them to actively keep an eye on her. In any case, he was fairly certain she was entirely safe at the bonfire, and he needn't worry about her being there without him being the one looking after her. Besides, she could theoretically take care of herself. She'd been entirely capable when she was alive, and she was alive now, so there wasn't a problem.
The problem Vince faced at the moment was Allison. Not the sort of problem that required a solution. No. It was the kind of problem that required action. He needed to either trample down his interest in her, or face it head on. She was technically a teenager, he was old enough to be her father. Old enough really to be her grandfather if he'd started young and his kid had followed in his footsteps.
Even as he was thinking it he was moving forward. His brain had no say, apparently. He was working off full instinct. His tongue slid across his lips, whetting them the moment before he pressed against her, right there in the open doorway.