On October 25, 2015, Ebby Steppach had two phone calls with her older brother, Trevor. During the first conversation, the then 18-year-old told Trevor that she was outside his house – but when he went to look for her, she wasn’t there. During the second conversation, which lasted four minutes, Trevor says that he was trying to determine what was going on with his sister.

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“She tells him that she’s in her car, she doesn’t know where she is and that she’s messed up,” says Michael, Trevor and Ebby’s stepfather. Michael says that Trevor then called him to see if he could locate Ebby through an app on her cell phone, which he was unable to do.

Laurie, the siblings' mom, adds that Trevor told her, “She wasn’t slurring her words but she did not know where she was.”

WATCH: What Led Up To The Disappearance Of 18-Year-Old Ebby Steppach

That was the last conversation Ebby’s family had with her. The young woman from Little Rock hasn’t been heard from or seen in over two years.

On Friday’s episode of Dr. Phil, hear about what was found in Ebby’s car. And, hear why Laurie and Michael claim police made a number of mistakes with the investigation into Ebby's disappearance. Check here to see where you can watch.

Ebby Steppach has been missing since October 25, 2015. If you have any information, please call Detective Tommy Hudson at the Little Rock Police Department at (501) 404-3128. Or, call the Little Rock tip line: (501) 371-4660 or the Halos Investigations: (662) 420-6518.

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