As for the prison, it's definitely not intended for her to be able to walk through the door, so I will be sure to fix that. However, I can't find the walkable fence, unless you are talking about the door she walks through?
I'm talking about the top-left of the picture, but I just realized it might be a decorative thing that goes close to the ceiling
Ah, yeah, that is a decoration thing for the ceiling. Passing under it is intentional.