She's 80. You're saying at no point in her life she has been able to heat her whole house, or at least can't remember it. But then go on to say times have changed, we've moved on; which presumably means she should be able to?
So I'm confused by this.
I'll be less subtle with my point. When she was young, she couldn't heat her whole house. At some point in her adult life (I would imagine) she was able to. Now she's not able to.
For her, things are going backwards.
It doesn't have to be Boris's fault, but it is his job to fix it.