Choc, I'm browsing job ads online (for no real reason) and came across this:
http://www.greycoatplacements.co.uk/vacancy/36053/x1xIn some ways it sounds quite similar to what you're doing for your Mum already, with the additional benefit of horses thrown in. This job calls for a couple, but might this sort of job be worth exploring, since you're thinking of finding a way to live independently?
Ivy.