Alright, let’s set aside the way I feel about how Ford has handled this whole thing.
I don’t blame Dipper one bit for this. It’s one hell of an opportunity to make his life way more interesting, and I would take the offer in a heartbeat in his circumstances. It’s a great deal for him. And I can’t help but wonder how much the possibility of staying around Wendy is weighing on his mind.
At the same time, Mabel’s heartbreak is entirely understandable as well. Eventually she was going to hit this wall, sure, but now is probably the first time she’s fully internalized that Dipper just doesn’t care about her as intensely as she does for him. It’s not even really a flaw on his part, it’s just something that is what it is.
Mabel has always had more of an affinity for the things that she wishes were true than the things she knows to be true. And unfortunately that idealism is not going to last very much longer, I think. Hopefully she can avoid sliding to Stan’s extreme on the other end.