Meghan is ruthless, but not nearly as clever as she thinks she is.
Following the debacle of the wedding, and ignoring the total exclusion of all her family, bar mother, for reasons unexplained, she could easily have taken the moral high ground, flown out to her father's bedside, with Harry whom I don't think has ever met his father-in-law, plus all the world's press, and been photographed looking concerned at his bedside.
Every one would have thought, oh how generous, and it would also have negated any future attempts on his part to badmouth her.
Instead she has chosen to estrange herself from him and her family, both sides, and now her calculated untruths and spite against anyone who crosses her, are being exposed.