AMY WINEHOUSE’s husband BLAKE FIELDER-CIVIL has sent a vile and abusive letter to her dad MITCH.

The six-page poison pen note from prison is packed with violent threats and abuse aimed at the cabbie.

The letter is now in the hands of the police and solicitors as Mitch weighs up a difficult conundrum — press charges and risk his relationship with Amy or let the waste of space off the hook again.

Threats ... Blake Fielder-Civil

A close pal of Mitch’s told me: “I could hear Mitch physically shaking when he phoned to tell me about the letter.

“He couldn’t even bring himself to read it out loud as it was just too sickening.

“But he told me that Blake described graphic scenes from a horror movie, in which Mitch is the victim.

“Part of Mitch wants to pursue this further with the police, maybe even taking out a restraining order.

“But then he is worried about it all driving a wedge between him and Amy.”

This isn’t the first time Blake has written dubious notes from the slammer.

In July The Sun revealed how he had been plotting drug-fuelled sex romps with a female lag — even hinting at a possible threesome with his wife.

Support ... Sharleen Spiteri

But there is a glimmer of good news for Amy — SHARLEEN SPITERI said she has no problem with her daughter MISTY looking up to the star.

Sharleen said: “We both think Amy’s amazing and she looks fantastic.

“She’s got the little skirts, tattoos and shirts — and a larger-than-life personality. Misty loves it.”

There is no doubt Amy is a great artist. But role model to nippers? No chance.

Sharleen's new solo single Stop I Don’t Love You Anymore is out today.