"Oh no, we've travelled back in time!" Jon said.
"Like, what did you say?" Crystal was still out of it.
Jon looked at the calender. It was still April, but instead of 2007, it was 1989! "I haven't even been born yet!"
Instead of panicking, however, Crystal said "Cool."
"It is not cool," Jon said. "I have to get us back. We might change the past or something."
Crystal really didn't see anything wrong with them being in the past. And she wondered why Jon was panicking about it so much. She offered him some pot, to make him relaxed, but he flat out said no.
So, she just smoked it herself and once again drifted away, while Jon tried to fix their situation.