It was definitely a heartbreaking moment to see Mabel look so upset and worried. She's normally so happy and optimistic, so you can see just how much she cares about her beloved brother by that look of concern. They definitely seem to be hinting at some kind of potential falling out in the future, but we at least have the reassurance of knowing that in the end, they'll be best friends again. In my opinion, they have a bond even stronger than the Stans had as kids, and that's saying something considering how close those two were growing up. But I know that regardless of any difficulties they may face, they'll be fine in the end, because they definitely would never end it on a sad note for Dip and Mabel, I'ma trust Alex with my emotions on this one XD. Great artwork here, it really captures how worried and anxious Mabel was during this scene, and reminds me of how sad and crushing that moment was. Good job sir.