[ He might need help, but then, it's sort of his specialty getting out of perilous situations just in the nick of time with very few resources. Normally he'd have his sonic screwdriver at the very least, but that hasn't worked properly since he's been here. Still, he can gather up the children and put himself between them and bodily harm, or — oh, yes, another person! Excellent! Quite unexpected and a pleasant surprise.

But then — no, she shouldn't be here, she's only a child herself. ]

What are you doing out here?

[ He gestures to that same dwelling she's just pointed to, all the while still heading forward. ]

Go, get inside! Two children are still out there in a boat, can't have the three of you exposed.