LOS ANGELES, United States (AP) — Kris Jenner became emotional while recalling a volatile 2016 argument she heard about between her son Rob Kardashian and his then-girlfriend Blac Chyna that traumatised him.

Jenner testified for the second day from the witness stand in a Los Angeles courtroom on Friday that she believed Chyna attempted to murder her son. At the time, she said she was told that Chyna pointed a gun at Kardashian’s head, tried to strangle him with a phone cord and hit him with a metal pole while intoxicated.

“It was complete chaos. It was scary,” said Jenner.

She’s the first of four defendants -– a group that also includes her daughters Kim Kardashian, Khloe Kardashian and Kylie Jenner –- to testify in Blac Chyna’s $100 million lawsuit alleging the women conspired to have her reality show “Rob & Chyna” cancelled and damage her celebrity status.

Earlier this week, much of Chyna’s testimony dealt with the fight, and the celebration of the show’s renewal the night before. Chyna testified that she was joking with her fiance when she wrapped a phone cord around his neck and grabbed his unloaded gun off a nightstand.

But Kris Jenner said putting a gun to her son’s head was “not a joke.”

“He was a mess,” she recalled while talking to her son after the incident on December 15, 2016. “I could only imagine how he felt. … This was a horrible situation. I was heartbroken.”

Kris Jenner began to shed tears while remembering the Rob Kardashian-Chyna spat, which happened months after Kim Kardashian was robbed at gunpoint in Paris. She said knowing that both her children had a gun pointed at them within the same year was traumatising for her.

While on stand, Kris Jenner said her boyfriend Corey Gamble separated her son and Chyna –- who she says smashed an expensive television in the master bedroom. But after Gamble pulled them apart and asked Rob Kardashian to leave, she was told that Chyna smashed a chair on the windshield of her son’s car.

In her questioning, Chyna’s lawyer, Lynne Ciani, asked why Jenner or anyone else did not call the police. Jenner said her security team – former Los Angeles Police Department officers – helped diffuse the intense ordeal.

Kris Jenner claims she wanted to help Chyna. She said arguments between the couple were an “ongoing theme” in their relationship that included alcoholic beverages and drugs.

“We didn’t put Chyna on the show and give her this fabulous life to be taken away,” she said. “We created other opportunities. I was hopeful that it would be OK. That’s why I didn’t call (the police).”

Chyna’s lawsuit, filed in 2017, alleges defamation and interference with contracts. It accuses Kris Jenner of being a ringleader who used her daughters in a campaign to defame Chyna as abusive to Rob Kardashian.

Chyna and Rob Kardashian share a daughter named Dream.