The explosion that could destroy everything didn't even touch the table it was sitting on.
When Chris and Jo are heading out of safety to look for Benny Chris asks what he should do if he runs into Emily first. Emily is no longer on the island and Helen is the one who is an extremely active threat. He obviously meant to say Helen.
Piper asks Jo if she remembers the near car crash from RDZ9021 and talks like Jo was in the car with her but she wasn't only Mia and Ed were.