She is her brother's keeper.

Tonight Tillie and I went out alone together.  It was the first time we've been able to do that since Teddy was born.  It was only to the fabric store to get some thread, but we made it fun with gummy bears in the car and pointing out Christmas lights on the way there.

When we got in the car to leave the shop Tillie happily pointed out all the "seats" in the car.  "Dat's Emmer's seat.  Dat's Kizie's seat. etc."  As I pulled out of the parking spot she exclaimed, "Oh no!  Where's Teddy!!?"  I quickly reminded her that Teddy was at home with Daddy, but the look of horror on her face was priceless. I can't believe she thought I left him in the store!