Metro

‘Extortionist’ mistress’s daughter to testify on behalf of Yankees GM Cashman

Yankee General Manager Brian Cashman will have a young ally on the witness stand when the case against his accused extortionist mistress goes to trial later this year — the defendant’s own teen daughter.

The 15-year-old girl — the only child of blond Brit Louise Meanwell — wants nothing to do with her mother and is poised to testify against her, Manhattan prosecutors revealed in a new court filing.

“Not only is Ms. Bump going to be referenced at trial, she is a witness,” prosecutors wrote of McKenzie Bump, of Rensselaer County.

The girl will testify about her mother’s harassment of another of the alleged victims from the same indictment — Jason Bump, who is the girl’s father and Meanwell’s ex-husband.

Meanwell is accused of harassing not only Cashman but also her ex-husband, her ex-mother-in-law and her ex-boyfriend in New Jersey, along with another of Cashman’s ex-mistresses.

“In a series of harassing text messages that [Meanwell] sent to Mr. Bump, defendant frequently references Ms. Bump,” prosecutor Kenn Kern writes in the filing. “In just one example, defendant wrote: call me back big boy!!!!! Get out your frisky fists with me now. Just give me McKenzie back and u will be of Scott [sic] free although I hope ur mum dies of terminal bone cancer that spreads all over here [sic] satanic body. Lol.”

The girl will also testify against her mother in a separate Manhattan indictment, in which Meanwell is charged with lying that she had sole custody in order to get a subsidized apartment in a luxury TriBeCa building, prosecutors said.

“I fully support my daughter alone in every aspect,” Meanwell lied in her 2007 application for a below-market-price apartment at 88 Leonard St., prosecutors say. Meanwell got some $67,000 in housing breaks over the course of five years, thanks to those lies — paying just $1,993 a month, prosecutors say.

It was from that ninth-floor apartment that Meanwell allegedly made many of her harassing phone calls to Cashman, threatening to expose their fleeting affair to his then-wife if he didn’t divorce the wife, marry her, have a child with her and pay $18,000 for surgeries relating to a pregnancy and an abortion that prosecutors say she also fabricated.

Trial dates have yet to be scheduled in either matter. Meanwell is due back in court March 8 before Manhattan Supreme Court Justice Daniel FitzGerald.