The woman who claims she married her multimillionaire father in a bizarre, incestuous romance made lewd come-ons and scandalous remarks to her half-sister – and is waging a “vendetta” against the entire family, the sibling says.
“She would speak to me like she wanted a love affair with me,” said Heather McMahan, another daughter of hedge-fund operator Bruce McMahan.
“Everything was sexual with her,” Heather said of her younger stepsister Linda McMahan. “There was no intent on her part to actually follow through with any of it. But it was her way of controlling and manipulating.”
Heather rose to defend her dad in the wake of explosive accusations of incest by Linda McMahan, 37. Linda, who had been given up for adoption, claims that after tracking down Bruce, her birth father, at age 20, they had a torrid love affair, and even exchanged vows in a ceremony in London.
The charges, in a secretly settled lawsuit, have rocked Wall Street, where Bruce manages billions in assets, and crushed the family.
The McMahans warmly embraced Linda when she showed up as a young adult. But she turned against them in a shocking betrayal, relatives said.
Bruce McMahan, a father of nine, claimed in court papers that Linda was trying to extort $10 million from him to keep her accusations secret. Through a friend, he declined to speak to The Post, citing a confidentiality agreement.
Heather, 44, a sculptor and single mom of four, accused her sister of lying out of resentment and vengeance.
“What’s happening here is Linda wanted money,” said Heather, who moved from Westchester County, where her father lives and she was raised, to Austin, Texas, after 9/11, and launched an Art for Soldiers Foundation.
“She didn’t get it. She’s on this vendetta thing, and she wants to destroy not only my father, but probably the entire family name.”
Linda’s birth mother, Myra Westphall, of Escondido, Calif., who conceived the girl with Bruce after high school, gave her up for adoption because she was single and already had three children.
She said she doesn’t believe Linda’s tawdry tale.
“I think Linda is capable of creating some pretty fanciful stories,” Westphall told The Post.
Heather showed several greeting cards sprinkled with graphic sexual descriptions and innuendo that Linda had sent her from California in the 1990s.
One concluded with a reference to Linda’s willingness to perform oral sex on her half-sister.
In another, Linda wrote about a man she was dating: “U know he is sensual just by talking to him and holding his hand (nothing else). I am saving myself for you, HONEY.”
Heather said Linda sent her thong underwear and sexy lingerie as gifts.
Heather said she took Linda under her wing when their father introduced her to the family in 1990 and showered her with designer clothes and luxuries in shopping sprees.
“She was my long-lost kid sister, and she came off as an injured little chick. Can you imagine the guilt?” said Heather, whose mother, Jill, died when she was 6.
“I saw she had some sexual issues, but shook it off as something else that Linda had to work through. I didn’t take it that seriously,” she said.
“She was a very sexual person, like most McMahans tend to be. We have a pretty strong libido – all of us. But Linda’s sexuality was her identity. Her primary way of communicating any kind of emotion always had a sexual overtone.”
When Linda became engaged in 1998 to a man she met in San Diego, Sargent Schutt, Heather said she spent $20,000 to throw Linda an engagement party at her then-home in Pelham, Westchester County.
“Most of the people at the party were her ex-boyfriends from California. They flew out,” Heather said.
Heather, then divorced, said she had gotten serious about a man she was dating, and begged Linda not to make any bawdy jokes or gestures around him.
At the end of the night, she said, Linda lingered long after all the guests, except Heather’s boyfriend, had left. Then Linda asked Heather for a kiss goodbye.
“She put her hands on both my cheeks and goes right for my mouth,” Linda said. “I pulled back, and she said: ‘Wait a minute. If you don’t let me kiss you on the lips, how are you going to let me kiss you down there again?’ ”
Heather said her boyfriend was disgusted. “He left, and I never heard from him again,” she said.
“She tried to destroy my relationship with a man because she didn’t want anybody else in my life.”
Likewise, she argued, Linda fabricated the incestuous trysts with their dad to destroy his marriage to his fifth wife, Elena.
Linda alleged that the seamy affair began in 1998, when her father wooed her over a glass of wine and the movie “Braveheart,” which they watched on his bed in his mansion in upstate Putnam.
He said she had a “very sexy version” of his own legs and he wondered what it would be like to kiss her – which was followed by a two-hour makeout session, court papers state.
Months later, on a trip to London, they had sex for the first time in a high-priced hotel, Linda testified. She continued to have sex with her dad for over a year until her wedding to Schutt in October 1999.
Linda, who later divorced Schutt, is now pregnant and living with another man in San Diego. She could not be reached for comment.