Just to correct any developing NSC preconceptions:
1. The lady in question is still married at present.
2. All children are legitimate and belong to the husband.
3. They are all white and English.
4. They do not live in a caravan.
5. They live in their own freehold house with a mortgage, but no positive equity.
6. The husband has to find somewhere else to live which restricts what he can put into the family home.
7. None of the family have ever drawn benefits.
8. The lady did have a part time job but now has to look after the kids full time.
Thanks for the constructive stuff so far.
Talk to the bank right away about reducing the morgage temporarily. Contrary to popular opinion, they're happy to readjust things to help out. It's not in their interests to repossess (especially in current times).