sleepy girl

We were out doing more Christmas errands this morning and were on our way home from the last stop. She had been good the whole time, but suddenly got very, very fussy in the car. After a couple of minutes of crying she was quiet. A new Christmas song had come on the radio and I figured she liked it (it often calms her down). After a couple of minutes I looked back to see what she was doing, and she had fallen asleep! It was well before her nap time, but she was sound asleep. We got home a little bit later and usually she wakes up when the car stops, or at least when I start taking her out of her car seat. She stayed asleep! I lifted her out of her seat and she stayed asleep on my shoulder. One or two times this has happened and she wakes up when I take her in and start taking her coat off. Nope. Not this time. I got her hat off but couldn't get to the zipper to take her coat off without putting her down. So I carried her upstairs, took her shoes off on the way, laid her down in her crib with her coat on....still asleep....unzipped her coat, pulled her arms out, lifted her head and shoulders up so I could pull the coat out from under her....still asleep. I covered her with her blanket and left....wow. Is this my daughter???