"I'm happy to be here. I'm excited. I'm nervous. I had a little mini panic attack before I came," Cline said.
Cline said she was surprised when MTV producers approached her about "Teen Mom 2."
The series will explore her parents' struggle with addiction and their incarceration.
"If I didn't go through all of this [expletive] growing up, all of this pain and misery as a child, hurting over addiction and all this stuff I went through -- it wouldn't have made me who I am today," Cline said.
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Welcome to the #TeenMom2 family, @jade_desere! pic.twitter.com/VKdEVFC5tZ— #TeenMom2 (@TeenMom) June 4, 2019
Evans was fired from "Teen Mom 2" in May after her husband, David Eason, reportedly shot and killed their family dog.
MTV said it has "no plans" to cover Evans' story in the new season.
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