Krystina says she worries her daughter, Samantha, is on “a path to destroy herself and her baby.” Krystina says the 19-year-old is a type 1 diabetic and claims she is not managing her disease while she is pregnant, and she fears that the baby may be born with disabilities and that her daughter and unborn grandchild’s lives could be in danger. Krystina says she works seven days a week to make sure her daughter has her medicine and food to eat, and Samantha’s behavior has pushed her to her limit – so much so that she admits she has threatened to push her daughter down the stairs and stab her in the stomach.

TELL DR. PHIL YOUR STORY: Problems with your teen?

“I did not want her having this child,” Krystina explains to Dr. Phil in the video above. “I didn’t think she would survive this pregnancy; I still don’t. I don’t think she has listened to what the doctors that we have been to have said.”

WATCH: Teen Says She Wants To ‘Strangle The Hell’ Out Of Her Mother

“And you thought the remedy for that would be to stab her in the stomach and push her down the stairs?” Dr. Phil asks.

“I said something I shouldn’t have said,” Krystina admits.

“What mother says to their child, ‘I’m going to stab you in the stomach and push you down the stairs?’” Dr. Phil continues.

“One that was totally pissed and has had enough of the last six years of her using me as a doormat,” Krystina says.

WATCH: Woman Confronts Pregnant Diabetic Teen Daughter About Her ‘Negligent’ Behavior

Watch more of their exchange in the video above and hear why Krystina says she was “beyond pissed” with Samantha. On Tuesday’s episode of Dr. Phil, see what the ultrasound results reveal about Samantha’s unborn child. And, can Dr. Phil get to the bottom of what is really going on with Krystina and Samantha’s tumultuous relationship? Check here to see where you can watch.

TELL DR. PHIL YOUR STORY: Conflict so big it needs a Dr. Phil solution?

Dr. Phil To Mom And Pregnant Teen Daughter: ‘You Guys Are Just Sabotaging Each Other’