^ YES! I just saw that and said the exact same thing. They took a lot of stuff from N&T (the father that leaves, the dead mother, the "you have us" scene, etc).
I don't know, I guess. It's just that their summer goal was to earn enough money to buy the treehouse, and it would've been nice to actually witness the purchase.
I still don't get why Sisterhood was well received by critics and N&T wasn't, but I guess it's just one of the many things about this world I'll never understand :look: