Why didn't I try this before

Praise the Lord! Emelie now will change Katherine's diaper! Dude! The freedom! And they're both so excited about it...

Emelie: "Mom! Can I go change Katherine's diaper???"
Me: "I think you just changed it 30 minutes ago..."
Emelie: "Well, I thought I'd could just check to see if she needed a change. Can I change the new baby's diaper, too?"
Me: "Uh... yeah!"

It may not last long, but I'll take what I can get!