So we were throwing the ball around and it bounced off the wall and landed on the couch right next to Summer. Mia went around trying to find the ball then finally found out that Summer had it (she was lying on top of it). Mia jumped down on the ground and crouched and waited for the ball, staring at Summer like she expected Summer to throw it. After that obviously did not happen, she bounced over to me and I said, 'No, your sister has it'. So she jumped back on the couch and started barking at Summer. What a weird, weird dog.