[Poisonous flowers are and always have been inextricably linked to both children, knowing the experiences they've had as he does. The temptation to refuse to say anything about it to either of them is there, just so the temptation to do something about it isn't there for either of them, but...]

[For all that he's a liar, there are some people he can no longer lie to. Not really.]

Probably safest. I dunno if there's actually anything of worth in the jungle, but it might pay to check before the island's gone for good.