Mommy, Daddy, help me to lay down!
So, we pick her up and cradle her because that's what she apparently means by "help me to lay down". More recently, however, she says this and continues with...
goo goo gah gah. Please milk!
And then she reaches for an invisible bottle. We give her this "bottle" and she pretends to drink it, asking us to sing Twinkle Twinkle Little Star or Old MacDonald Had a Farm. She pretends to fall asleep when her bottle is finished and the song is over.
So I decided to do some googling and apparently this is common in 2-3 year olds when they start remembering things from when they were newborns. They say it mostly occurs when a toddler is stressed or feels like they're growing up too fast that they seem to 'regress'. I really don't know what would cause her to be stressed, but it's not like she's doing it all the time. She's only doing it as a game. Like instead of feeding her baby doll, she's pretending to be the baby doll.
I'm curious as to whether it may be some combination of her long term memory coming into play (I did sing those songs to her when I gave her her bottle or cuddled her as a baby) and her imagination.