Her boyfriend told TMZ he and Samantha were driving when they were forced to swerve to avoid overzealous photographers, hitting a concrete barrier.
He claims a photographer swerved in front of them while trying to get a shot, as the driver mark then apparently had to avoid the pap's auto, which led to their vehicle colliding with a concrete barrier.
Mark drove her to the emergency room, where she is now receiving treatment.
The Sun also reported that Samantha Markle had "slammed claims" that Kensington Palace was assisting their father financially during his hospital stay.
Grant added: "She doesn't have a relationship with anyone in the family".
She said on ITV's Loose Women on Monday: "I have to say, I'm not taking it personally".
'There is something in this country called freedom of speech, ' she said. "But if I'm talking about my life or my father's, she has to respect it".
Samantha didn't receive an invite to Prince Harry and Markle's royal wedding. "I searched the world for something that I thought was really sentimental and I'll like to give it to her in person, but if not, I will certainly send it". But if not, she'll just mail it.
"She doesn't have a copyright on that and she's not going to tell me that I can't speak about my own life or my father's where it's a matter of public self-defense because the media is disparaging us". After the photo scandal came to light, Meghan's dad said he was embarrassed and didn't want to attend the royal wedding.
In just two days time Meghan Markle will walk down the aisle at Windsor Castle. According to reports, the operation was successful, but he has to remain in the hospital for a couple more days.