Her boyfriend told TMZ he and Samantha were driving when they were forced to swerve to avoid overzealous photographers, hitting a concrete barrier.
Meghan Markle's half sister, Samantha Grant, was hospitalized just days before the royal wedding after a "paparazzi confrontation" led to a auto accident in Florida.
Controversial UK TV host Piers Morgan has lashed out at Meghan Markle's half sister, calling her a vulture during a fiery interview.
It is unclear if it is her wheelchair or one provided to her. Samantha has multiple sclerosis so she was unable to pick herself up from the mat on her own.
Ms Markle blamed the media for her father's decision to stage paparazzi photos in order to improve his image.
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It's claimed he didn't want to further embarrass Meghan or the royal family.
"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.
She told the show's panel: "I have to say I am entirely the culprit".
Mum Doria, who was yesterday pictured heading to the airport to make her way to the United Kingdom for her daughter's big day, is now tipped to give Meghan away after Thomas said he had to miss the wedding on Saturday and undergo a heart operation. "I'm not taking it personally, nor am I holding it against her".
Samantha and Meghan's father Thomas announced on Monday night he wouldn't be attending the wedding, after he was accused of working with a photography agency on staged paparazzi shots.
Thomas had stents implanted in his blood vessels, and will remain in hospital for "a few more days" but he will take "a long time to heal".