Alexandria says that since her sister’s death in 2016, she has been struggling to move forward. The sisters, who were identical twins, were extremely close.

TELL DR. PHIL YOUR STORY: Is Dr. Phil your only hope?

Alexandria’s sister, Anastasia, was killed when the car Alexandria was driving plunged off a cliff in Hawaii, falling 200 feet. It has been reported that at the time of the accident, the sisters were engaged in a heated argument – which may have led to the accident.

In the video above from an exclusive interview with Dr. Phil airing Thursday, Alexandria shares about her struggle to move on – and Dr. Phil offers her advice.

WATCH: Woman Accused Of Killing Twin Sister In Car Crash Recalls What Happened Before Accident

“This was an accident,” Dr. Phil says. “There was no bad intent here. It’s not being disloyal to her to say what happened, it’s just sisters arguing … You didn’t do this on purpose.”

Hear more in the video above. And, check here to see where you can watch the entire interview on Thursday.

TELL DR. PHIL YOUR STORY: Have a story in the news?

'The Truth Will Set You Free,' Dr. Phil Tells Guest Trying To Move Forward After Tragic Accident