By Tatiana Krisztina When King Charles was diagnosed with cancer this week, Prince Harry traveled to the UK to be with him. Harry’s wife, Meghan Markle, stayed in California with the couple’s two children, Archie, four, and Lilibet, two. Meanwhile, the Duke of Sussex was seen arriving at a private terminal at Los Angeles International Airport to head to be with his father. While there’s some debate why the Duchess of Sussex stayed home – with rumours saying she promised never to return to the United Kingdom – one source that previously worked for the royal family thinks Harry might have just n…