Kai Trump was overcome with emotion as her final week of high school approached, breaking down in tears over the thought of being "split up" from her tight-knit group of friends, Wonderwall.com can report. The 18-year-old, President Donald Trump's eldest grandchild and a student at the Benjamin School in Jupiter, Fla., shared a vlog about her final five days as a high school senior - but not before experiencing a bittersweet moment as she reflected on everything she's leaving behind as she moves on to college and beyond.