"I've seen her under tremendous stress and pressure", he was quoted as telling The Atlantic.
Still, while Ivana said her daughter is "fine" with Melania, a source close to Ivanka said Ivanka and Melania "have a desire to be mutually respectful" - but their relationship definitely is not an "affectionate" one.
"I even thought of Ivanka for the World Bank", Trump added, "She would've been great at that because she's very good with numbers".
The position of the president of the World Bank has historically gone to an American, while a European has led the International Monetary Fund, its sister organization.
She was previously a businesswoman and NY socialite.
It's been reported that Ivanka and Melania Trump have a "complicated" relationship, but things between the First Daughter and the First Lady might be peachier than they appear - at least, according to Ivanka's mother.
Trump insisted that "it would've had nothing to do with nepotism" and Ivanka would have been "incredible" in the role. The family and Maples collided on the mountain and divorce conversations ensued immediately after.
Previously, the White House disclosed that Ivanka Trump was involved in the selection process for the post, however, he was not a contender for the job. "If she wanted to ever run for President, she would be hit very, very hard", he says.
After Ivanka spearheaded an unsuccessful effort to convince the President to stay in the Paris Climate Accords, she hunkered down and selected a "portfolio" of a few key issues, including global women's empowerment and workforce development, that she would focus on exclusively, The Atlantic said.