Well it was worth a shot. Dipper's quick on the uptake. She admires that about him, but they really, really don't have time for him to start arguing now.

She closes her eyes and heaves a shaking breath.

"Because this teleporter is too old to handle teleporting more than one person at a time, and you're the only one who can get those magnets back safely."

Whoever said it was easier just to tell the truth was lying.