A 5 year old American girl

At the beginning of a school day, I drop off an American girl....at the end of a school day, it seems like I have the wrong little girl sitting in my car telling me about her day. After spending all day at school, Bean talks with a British accent and uses the expressions and words of a British child. After a few hours home with us, she has reverted back again. At what point will her new accent win out and just....remain? And she is also developing the attitude of a teenager. I said to her the other day -"pick up your sweater and throw it in the hamper", and she rolled her eyes and said - "mummy, that is a jumper". Yes, I know they do call sweaters "jumpers" here, I just forgot to call it that. So apparently, I have an American 5 year old on the verge of being a British 16 year old.
Bean and I also had a conversation about driving here in jolly old England today. On the way home from school, I am yet again, swerving in and out of parked cars, barely scraping by between parked cars and moving cars....just a typical day driving in my little village in England. Driving has been the one thing I have had the hardest time adjusting to here, and the one thing that will set me over the edge on any given day. When almost being sideswiped by a truck who thought he was smaller than he was...or just didn't care how big he was...I think I made a grrrr sound similar to a growl. Bean heard my frustration and said -- "mummy, why do they drive on this side of the street here". I just smiled in the rear view mirror at her and said sweetly --"they just do things differently here sweetie. Neither way is right or wrong --it is just different". What I was thinking in response to her question was --I have no idea, it is wrong, and crazy, and is making me insane. But, I am impressed that I was able to keep that to myself, especially as I was swerving around yet another parked car in the road.