Meghan Markle has "left behind her a trail of devastation" for both her family and the Royal family, an expert has claimed.The Duchess of Sussex, 40, was branded a liar by her dad Thomas Markle in a scathing TV interview on Friday 13 August. Meghan's dad claimed the mum-of-two wasn't telling the truth in her bombshell interview with Oprah Winfrey, which aired earlier this year.