^^ Here's her profile (edited by me in one place)- maybe there are clues here? For instance, I always wondered if she and Jamie were more that just friends at times...

(From CityFile NY)
Who
The eldest daughter of
The Donald, Ivanka is a former model, social fixture, reality TV star, jewelry designer, and—if she's to be believed—real estate executive. Her boyfriend is fellow real estate heir
Jared Kushner.
Backstory
Donald Trump's daughter by his ex-wife
Ivana, Ivanka had a predictably cushy childhood: Raised by a rotating cast of Irish nannies, she grew up in a marble palace atop the Trump Tower and spent vacations on her dad's lavish estate in Palm Beach. She first made a splash on the scene during her teen years, when she pursued a modeling career and appeared on the cover of
Seventeen. (She's said that she "had to turn" to modeling to pay her bills, which is about as accurate as her father's claim that he's entirely self-made.)
After graduating from boarding school at Choate, Ivanka enrolled at Georgetown, transferring to her dad's alma mater Wharton after two years, and earning a burst of publicity as a junior when she appeared in
Jamie Johnson's
Born Rich. Following graduation in 2004, she spent a year working at
Bruce Ratner's real estate firm before joining her dad's company. These days Ivanka serves as vice president of real estate development at the Trump Organization, although what, precisely, her responsibilities entail is unclear.
Much like her father, though, Ivanka has bigger plans. In 2007, she jumped into the jewelry biz with the "Ivanka Trump Collection," and opened a retail boutique on Madison Avenue. She also shares her dad's taste for the spotlight: When Carolyn Kepner was booted from
The Apprentice, it was Ivanka who replaced her—and she now dons low-cut dresses and bares her considerable cleavage in ads for her dad's real estate projects. Most recently, she debuted a line of microwavable meals in conjunction with the food conglomerate ConAgra.
Personal
Ivanka dated Bingo Gubelmann for a spell (the cousin of socialite
Marjorie Gubelmann) and was also linked to Lance Armstrong and Topher Grace. In 2007 she found love with
Observer owner (and fellow real estate scion)
Jared Kushner. The couple split in early 2008, reportedly because Kushner's mother objected to his expedition into non-Jewish waters. She's since enrolled in conversion classes and, as of late 2008, the couple are back together. Ivanka lives in a two-bedroom apartment at ******, which was purchased for $1.5 million in 2004.