Yeah, that's... kind of a problem here. We can't just send people back to their own dimension or put them in jail or whatever.

[she sighs. it's hard to believe they had LESS problem with Bill, but at least he was incorporeal and had to rely on deals.] Maybe Frisk or Sans know something that can stop them from hurting people. Or... [she flips through her scrapbook and gasps as she falls on one of her pictures, slapping her forehead.] Wait. Duh. It's so simple. Dipper, what about Regina?