When Grice was 4, back in 1960, her father died, leaving her mother with five children to raise. Until the kids turned 18, Sadie Grice got survivor benefits from Social Security to help feed and clothe them.

Now, Social Security claims it overpaid someone in the Grice family — it’s not sure who — in 1977. After 37 years of silence, four years after Sadie Grice died, the government is coming after her daughter. Why the feds chose to take Mary’s money, rather than her surviving siblings’, is a mystery.

Across the nation, hundreds of thousands of taxpayers who are expecting refunds this month are instead getting letters like the one Grice got, informing them that because of a debt they never knew about — often a debt incurred by their parents — the government has confiscated their check.

The Treasury Department has intercepted $1.9 billion in tax refunds already this year — $75 million of that on debts delinquent for more than 10 years, said Jeffrey Schramek, assistant commissioner of the department’s debt management service.