Perfect place for Abigail to just... appear. Nobody would expect to find some kid just chilling on the island!

EDIT: Actually, I was midway through typing a response when I realised something. Abigail's a bit of a glass cannon; her stealth and agility are very, VERY skilled (simply through lots of experience by now) whereas she's pretty much useless at everything else. However, I don't want her going full-ninja on everyone; I wanted to know whether it was okay for Abigail to have superior stealth to the hunter PCs or not? I don't want to steal anyone's thunder, that's all. I think I'll leave it for the GMs to decide but if anyone has any personal gripes about it feel free to let me know now.