Kevin Costner inYellowstone; Christine Baumgartner Costner.Photo:Paramount Network / Courtesy Everett Collection; Axelle/Bauer-Griffin/FilmMagic

YELLOWSTONE, Kevin Costner; Christine Baumgartner and Kevin Costner attend the 28th Annual Screen Actors Guild Awards

Paramount Network / Courtesy Everett Collection; Axelle/Bauer-Griffin/FilmMagic

Kevin Costner’s estranged wifeChristineis claiming in court documents that she “did not pressure” him to leaveYellowstonebefore their split.

In the documents filed Friday in the Superior Court of California, County of Santa Barbara, Christine, 49, says that the actor’s “public attacks on me are harmful for our family” and that she thinks “they are meant to pressure me to move out without a temporary child support agreement in place.”

“I have avoided being public about the reasons for our divorce. I have done this to protect our family’s privacy. I did not pressure Kevin to leave theYellowstoneshow,” she added.

The former couple’s split"has nothing to do withYellowstone,“the insider said, adding, “The two situations are unrelated.”

Reps for both Costner, 68, and Christine did not immediately respond to PEOPLE’s requests for comment on Wednesday morning.

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Kevin Costner inYellowstone.Kevin Lynch for Paramount Network

kevin costner

Despite the two events being unrelated, a family source told PEOPLE days later that Costner’s demanding work schedule was difficult for Christine prior to her divorce filing.

“Christine wants them to spend family time at their Santa Barbara home,” the latter insider said. “During filming, Kevin is not around very much. His absencehas been very hard for her.”

According to the source, “Christine doesn’t want him to throw himself into another project. He has been obsessed with filmingHorizonsince last year. She wasn’t happy about it.”

Since their split, Christine and Costner have been engaged ina legal back-and-forthover whether she can continue to live in the home they shared amid their ongoing split.

The former handbag designer filed for divorce on May 1 after18 years of marriage, citing irreconcilable differences and listing their date of separation as April 11.

Kevin Costner and wife Christine in 2022.Rich Fury/VF22/Getty

Kevin Costner and Christine Baumgartner attend the 2022 Vanity Fair Oscar Party hosted by Radhika Jones at Wallis Annenberg Center for the Performing Arts on March 27, 2022 in Beverly Hills, California

“But this is not what he wanted,” the insider added. “He knew that Christine was unhappy though.”

Days earlier, a source told PEOPLE thatdivorce wasn’t Costner’s idea: “It was not anything that he wanted or sought, and if he could change the situation, he would.”

In thestatement announcing their split, the actor’s rep wrote, “It is with great sadness that circumstances beyond his control have transpired which have resulted in Mr. Costner having to participate in a dissolution of marriage action.”

Costner and Christine sharethree kids: sons Cayden, 16, and Hayes, 14, plus daughter Grace, 13.

source: people.com