She has a cheek to try to influence your life to suit herself. Suggest to her that she moves back to England and when she tells you all the reasons that she does not want to do that , tell her the same applies to you! Absolutely go for it and choose your own retirement place. You are more likely to have a good retirement near friends , who will be there for the day to day life, rather than suiting her . It will probably be cheaper for you to live in Norfolk , so that you may have more money to do things that you like too.
I would suggest a couple of things you might consider before actually moving. Could you stay in a hotel or b and b for about a week in the autumn or winter? Places can look lovely in the summer, but how is getting about etc in poorer weather? What is transport like if you could not drive, are you near libraries , shops, doctors etc . You probably have quite a choice of transport where you live now. We dont look at these sorts of things when we are on holiday. Ask your friends what the good and bad points of living there are Sit down and write yourselves a list of things you like to do and things that you dislike and consider how these will work in the new place. If you have friends who have moved over the last year or two ask them what things they had not expected and what was their best and worst things about the move. If you live in a house, would it be something to think about moving to a bungalow, which would mean that you could live there much longer if mobility became a problem? In other words find out what suits you , and you could check if there was a train, or onward flight to Norfolk, but that would be as far as I would go to suit your daughter. Good luck and I hope you find something that suits you.