I like how the children are tying to get along.
Separating them for the weekend made me confused at first, but then it appeared Alyssa will disassamble herself even if Alex is not around, so maybe it's actually a good idea, I can see how by discovering that fact she'll learn she actually enjoys such a play, so when she returns, they can get along and keep disassembling each other, but not as part of fights, but for fun.