Mabel didn't want to leave Will behind, and Dipper didn't want to leave Bill behind.
Ford smiled at them, "It's only for 9 months. Besides, we could exchange letters in the mail, so you can still talk."
"Okay..." Mabel frowned, looking over at Will.
Will smiled at her and waved, "It'll be okay, Mabel. You'll be back. Nothing bad's going to happen."
"You sure about that?" Dipper asked, glaring up at Will's older brother, "Because, if I recall correctly, the last week of summer last year was... well, terrifying."
He snickered, "You're not dead, Pine Tree. It's fine. It'll last for a while, I'm sure."
"You promise you could maybe work on your magic, so you can walk?" Mabel asked.
Will looked down, "I'm not sure it works like that, Mabel. I could probably work on it when I'm asleep, as it wouldn't cause any pain, and then I'll see if I could walk..."
"You two promise not to burn this place to the ground while I explore the woods again, right?" Ford asked, looking at the two boys.
He smiled, "Calm down, Sixer, it'll be fine. Besides, we could show you somethings you didn't even know were in the forest."
"As long as we don't run into gnomes..." Will whimpered.
He snickered, "I won't let the gnomes, or any of the other creatures of the forest, hurt you."
"Thank you..."