D.S.
Hello B.: You surely have a little one having a rough time and needs to be understood because she can't speak for herself.
I am the mother of 5, the Nana of several sweethearts, and have done day and foster care. (Just so you know that I have some experiance with little ones).
You have thrown your little one into a typhoon of changes, emotions and she can't put it all together as fast as an older child will. Each adjustment alone could take weeks but add them all at once or in a short time You Are Lucky; your little one is copeing!!!
1.Once when we brought home a new baby son after our 2 yo 2nd birthday - we had thought we had prepared her did all the right stuff--- but people kept coming to see the baby and one foolish person seeing my daughter was upset said" do you want me to take the baby? so my little one went and drug the diaper bag to her!! Seems that she thought we were only waiting for its mommy to show up and she really did want a kitty forher birthday not this noisy baby that could not even play.
2. once when we moved from one side of town to another new house. Even though we had been there daily and had talked about it a lot my children couldn't sleep or eat the first month we were there unless everyone was together. I finally figured out that they were scared spitless that things were changing on them even if it was forthe better it was a change. (from that time on when we moved we had the things for their rooms ready to be set up first so they had the things they knew and were comfortable with in place in the bedrooms). For your child to be desperate enogh to want to sleep in the car seat for security says so much about how insecure the feelings are. I can say from my experiances that it is not a stag or attention getter --- they want the peace and security they knew before all the changes and of course will cling to you as their parent and rock.
So we just had everyone together and I made sure that we played and read and played more until they felt safe. I can tell yo that it is not unusual for 2 yo to give up naps at all but because you have flipped their world it may become a rareity ever again. If your child has had to change all the boundries even sleeping then it will take a lot of kind love and patience and saying out loud that you know they are going to be alright once again- it reassure both of you. TIME is what you need and I hope that you will consider something that I have learned to do with my grandchildren when their worlds are rocked-- I whisper loud enough so they can hear yet they think they are the only ones that can hear** me tell them how important they are to the family, that they are #1 in my I Love You book, and anything else that I wish to say. I can be holding another child, while I do this or better I am holding them when I do this so that they feel that I am still 100 % theirs and not having to share. Shareing for a little one who hasn't had to do it is a awful concept. Good Luck in your adventure of parenthood and I know that itis the most rewarding thing you will ever accomplish. Nana G