née Melanija Knavs

What went on here? Trump obviously said something cruel to Melania after making eye contact with Ivanka.
Watch the reaction of the blonde girl (Pence's daughter?) next to Trump below, and the man behind her.
I have a minor theory that Melania will eventually prove the undoing of The Donald, but it's hard to separate facts from rumors:
- - Trump flew to Slovenia to make a deal with her father, essentially purchasing her from Viktor Knavs and his wife Amalia Ulčnik?
- Viktor Knavs is tied to the Russian Mafia in some fashion?
- Melania's parents live in Trump Towers a few floors from the Trumps?
- Trump has Melania in an ironclad pre-nup, as well as Russian mob threats on her parents and her son?
- Neither Marla Maples nor Ivana Zelníčková have made any public comments regarding the ascendency of Trump to the American throne. Pre-nups? Threats?