Oh dear looby I am sorry you have been living such an unhappy life for so many yeArs. it is very hard to make a move after so many years of marriage. Property prices are high in the south east but this misery could continue for another 20 odd years. It depends on how much you can put up with. My mum was in the same position and my father lived until he was over 90 and She developed dementia shortly afterwards, so never got any peace or happiness which makes me very sad. If you can be brave enough to make the move try to do this. You could have many years ahead of you, either of happiness or misery.
We offered mum to live with us , but if you can find a small place close to your daughter it would surely be better than waiting to become a Merry Widow, it could be years. Easy to say but not easy to do I know. Talk to your daughter again,