What caught my eye however was this line:
Her father has had to quit his job to look after them until she is released.That's a typical modern-day response and generally it requires going on a benefit (so that's the assumption I will make.) This is part of the reason the number of males on the DPB is growing. Absent mothers.
In the past however the view would have been her father needs to stay in work as he is the only one capable of meeting the financial needs of his grandchildren. He'd be the one charged with putting bread and butter on the table. Not the state.
And the baby is one and the other two are at school for goodness sake. Have they heard of daycare?
(This has triggered a further thought. I have already raised a couple of loopholes regarding new work-testing regimes. Here's another. A mother who's added a child to her benefit has to take a job when that child turns one. In steps the father. He can now start on a caregiver's benefit free from work-testing until the child is 5. It'll happen.)