Her husband's mom tells PEOPLE the intimate note shows his importance to her career

By Pete Norman
January 25, 2009 01:00 PM

Amy Winehouse s jailed husband, Blake Fielder-Civil, has vowed to avoid all contact with the troubled singer, according to his mother – and may use one of her love letters to back up demands for a share of her fortune during divorce proceedings.

“Blake doesn t want a reconciliation with Amy now,” Georgette Civil tells PEOPLE, confirming a report in the British press that her son may use the letter to demonstrate how important he has been to Winehouse’s career. According to British newspaper News of the World, which published excerpts of her handwritten letter, Winehouse, 25, promises in it that she will write new albums especially for Fielder-Civil, 26.

The songs on Winehouse’s worldwide bestseller Back to Black are widely believed to be inspired by the pair’s early, rocky relationship.

The newspaper adds that legal reps for Fielder-Civil – behind bars for assault and attempting to pervert the course of justice – will argue that he is entitled to half of his wife’s estimated $15 million earnings.

Fielder-Civil s mother confirmed the authenticity of the love letter to PEOPLE. It was not designed to be used in the divorce, she says. We ve done a lot of soul searching. She did love Blake very much. It is a shame he is no longer in love with her, but it shows how important Blake was to Amy.

A rep for Winehouse refused to comment. The singer, on an extended vacation in the Caribbean, has reportedly vowed not to let her husband proceed with a divorce.