The home secretary is the most high-profile victim so far of the scandal over MPs' expenses.
She has, I'm told, decided to stand down from the cabinet because that's the "right thing for her family" who had been at the "forefront of the row" about the claim she made for the cost of watching an adult movie at her constituency home.
The pressure was felt not just by her husband - who had to admit that he'd watched it and submitted the claim - but by their school age children and her mum and dad.
Her allies say that she met the prime minister during the Easter recess to tell him that she would like to stand down in the next reshuffle. They're making it very clear that she remains committed to his leadership of the Labour Party and to fighting her marginal seat at the next election.
One told me that though the home secretary still deeply regretted her mistake, she felt "vindicated" in her overall approach to her expense claims in the light of what has since emerged in the Telegraph's drip-drip torture of the Westminster classes. She may, I was told, have claimed for "a kitchen sink" but, unlike many of her colleagues, she didn't "claim for the whole kitchen".
The prime minister now has a home secretary on the way out, a chancellor who's badly damaged, a communities secretary whose behaviour he described as "totally unacceptable" and a transport secretary who's had to repay some of his expenses claims.
With potentially painful election results this Friday and Sunday the cabinet reshuffle now looks set for Monday.
It is Gordon Brown's last chance to prove to his party that he has a plan to get them out of the hole they're now in.
Update 1806: Surely it's no coincidence that a series of high-profile MPs are letting it be known that they're leaving the government or leaving parliament? It must - some mutter in Westminster - be a conspiracy, and that is what some close to the prime minister fear.
After all, why else would so many risk distracting and embarrassing their party on the eve of the last big electoral test before the general election?
The truth is probably simpler, but no less worrying for Gordon Brown.
The signs are that the decisions of ministers to stand down and of MPs to retire are a reflection of a widespread despair felt in Labour's ranks at the personal vilification that individuals have suffered and at the political defeat that they increasingly anticipate.