Samantha has claimed she only lost contact with Meghan a year ago.
Samantha Grant, who shares a father with Meghan, is said to have been injured when a auto she was travelling in swerved to avoid an alleged paparazzi photographer and hit a concrete barrier.
Mark drove her to the emergency room, where she is now receiving treatment.
Meghan Markle's media-hungry half-sister has no intention of being silenced, as she continues to dominate the week before Meghan's wedding to Prince Harry with interviews, pronouncements and the puppetting of their shared father.
It's claimed he didn't want to further embarrass Meghan or the royal family. "Staying in the hospital a few more days", he told TMZ after the procedure on Wednesday.
She said on ITV's Loose Women on Monday: "I have to say, I'm not taking it personally".
"If it's about my life or my father's then there's something in this country known as freedom of speech", she started her rant in the above video.
"There's no bigger media vulture with this wedding than you", he said. However, she still bought the "Horrible Bosses" star a present for her big day. "I would like to give it to her in person, but if not I will certainly send it". But if not, she'll just mail it.
Samantha has been making headlines all week thanks to the photos she staged with her dad, Thomas Markle.
He also claimed that he suffered a heart attack days earlier, even though paparazzi who had been following him claim he never went to a hospital and instead was photographed going to several greasy fast food joints.
Meanwhile, Harry and Meghan's nuptials will take place this weekend, on Saturday, May 19, at St George's Chapel in the grounds of Windsor Castle, where the prince was christened. Pictured: Markle attends the Women's Empowerment reception hosted by Foreign Secretary Boris Johnson during the Commonwealth Heads of Government Meeting at the Royal Aeronautical Society on April 19, 2018 in London.