The British singer is suing her former mother-in-law for selling one of her love letters, reports The Sun.
The letter was written to Blake Fielder-Civil while he was in jail. Fielder-Civil’s mother, Georgette, sold the letter, and now the 25-year-old singer is suing the woman for more than $80 000 US.
Winehouse and Fielder-Civil were married in 2007, and divorced in July of this year.