Maybe moving to Scotland next year wouldn't be so bad? I could do work for my sister more easily, actually go to the craft stalls with her, the kids would see part of their family more often, I'd maybe feel more at home, and maybe by being surrounded by family I'd feel more of a 'group' and not on the outskirts?
Of course, I'd need to make friends, but I already know a lot of people there with children, who I went to school with and keep in touch with. And there are of course my friends without children who I barely see now - it would be a good chance to start seeing them more often.
It's certainly got me thinking.