It’s not her income that’s the issue - it’s the fact that she will be working in another part of the country, and will hardly even be at home. If she’s working she’s obviously not going to be there, if she’s got back to back trips or on standby she will have to stay near Heathrow so she’s close by so she’s only going To be at that house on days off if she’s got a few together or annual leave if she’s not away. Most sensible people would relocate to be closer to work, which is what the majority of single cabin crew do - they usually house share near the airport.Most people have a secure, lifetime tenancy on a housing association or council house. No matter what changes to your income etc