Kate Middleton reportedly wants Prince Harry to rein in Meghan Markle. A source told RadarOnline.com that the Princess of Wales allegedly told her brother-in-law to put a "leash on Meghan" as the couple continues to ruffle feathers within the royal family. "Not out of hostility, but because she sees it as the only way to bring some control back into what she views as an increasingly unmanageable situation," the insider claimed. Kate Middleton, Prince William, Prince Harry and Meghan Markle at the Commonwealth Service in 2019.