It's not particularly straightforward working out what will happen when your mother is no longer self-funding. Some homes (the one my mother was in which was part of one of the major care home chains) accepted the LA rate which was much less than the self-funding rate. That's one of the reasons I chose it - so that there would be no possibility of her having to move. Other care homes will not. In those situations you "might" have to move her but you can also make a really good case that this is her home and to meet her needs the LA needs to cough up some more money.
In the 6 years I've been on the forum, I think I have only read one post where someone said "my mother's money has run out and the LA want to move her" and in that case the LA backed down. Generally, if the going rate is the going rate, the LA will pay it (or negotiate it down). Obviously if you've found the only care home in the country with gold plated taps and butlers than might not be the case, but mostly it is.
In the 6 years I've been on the forum, I think I have only read one post where someone said "my mother's money has run out and the LA want to move her" and in that case the LA backed down. Generally, if the going rate is the going rate, the LA will pay it (or negotiate it down). Obviously if you've found the only care home in the country with gold plated taps and butlers than might not be the case, but mostly it is.