Destoni admits she has a problem with anger – and has since she was 3 or 4 years old. The 14-year-old says she has punched and hit things and has chased her sister and her babysitter with a butcher knif

TELL DR. PHIL YOUR STORY: Know someone with outrageous behavior?

Destoni has also had trouble in school, calling out in the hallways that her teacher had a sexually transmitted disease, threatening to bring a gun and shoot her teacher and other students, and telling a boy that “he’s lucky he doesn’t have a bullet through his head.”

While talking with the teen, Dr. Phil asks audience members for their reaction to hearing that Destoni has threatened gun violence.

“I feel that you don’t care for human life whatsoever,” a young man tells her. “You’re the type of person that you would bring a gun, but you wouldn’t do it because you’re a coward and you hide behind your words.”

WATCH: Teen Says A Critical Event From Childhood Left Her In Emotional Pain Which Causes Her To Act Out

Hear more in the video above, including from a survivor of a shooting rampage in Isla Vista, CA and what she has to say to Destoni.

On Tuesday’s episode, Dr. Phil drills down to determine why Destoni is experiencing so much pain that’s causing her to act out. And, see what happens backstage after she is offered help. Check here to see where you can watch.

TELL DR. PHIL YOUR STORY: Have a family drama that needs Dr. Phil's help?

'I Want A Mom That Actually Listens,' Says 14-Year-Old