Some of the replies here are ridiculous.
Yes, in theory one must put your children first, but they’re 16 not 6. These are children who could choose to move out now, could get married, and in two years will probably bugger off to uni or similar without so much as a backward glance.
And people are saying the OP should always always put them first? Until when? Until they decide otherwise?
The OP is a single parent on a limited income with disabilities of her own. Added to which she lives in a part of the country where the cost of living is steadily rising because of the amount of people who want to move there.
16 year olds aren’t likely going to have much opportunity in Cornwall, so let’s not pretend that the OP is ripping them away from wonderful life opportunities to plunge them into the back of beyond. If anything life will soon get dull for them in Cornwall and they will be looking to get the hell out, much as many youngsters do when they leave school.
And let’s be honest, saying they’ll sofa surf and work in burger king is nothing more than emotional blackmail. Given they apparently don’t have friends, exactly whose sofa are they planning to sleep on? And do they really think the parents of their friends are going to want them there?
I would sit them down, and tell them how it is. Keep your mum out of the equation and explain about the financial side, how you can’t afford to keep living there, and how there will be better opportunities up north. Something which they will undoubtedly be aware of anyway.
If they really choose to move out then so be it. But they have an opportunity to move and if they choose not to take that opportunity then that is their choice.
No wonder we have such a load of entitled adolescents now because their parents give up their own lives for them at cost to themselves.
As for the poster who has a strained relationship with their parents for making them move when younger, get over yourself.
Sometimes people need to realise that life really isn’t all about them.