This is going to be heavy spoilers, but this regards the It (2017) and the character Beverly. I think I might have missed something or it wasn't explained.
In the movie, Beverly attacks and possibly kills her father near the end of the film.
She does this in the bathroom and then, as she turns to leave, Pennywise captures her and takes her away to the Barrens and shows her the deadlights. Bill and company go on a quest to rescue Bev and to kill Pennywise. They go to the house on Neibolt street, and then into the sewer system,
find Bev and kill Pennywise.
That's all well and good, but then...
After killing Pennywise and leaving the sewers
the group all cut their hands and take a blood oath to come back if Pennywise shows up again. One by one the group leaves and soon it's just Bev and Bill. Bev says she's leaving for Seattle (I think); but, my question is, how does she know this?
She didn't make any plans, her father may or may not be dead, yet, it seems like settled business that she's going across the country, if not the next day, so soon.