Kevin Costner with now-estranged wife Christine and their three kids.Photo: Albert L. Ortega/Getty

Grace Avery Costner, Kevin Costner, Hayes Logan Costner, Christine Baumgartner and Cayden Wyatt Costner arrive for the Premiere Of 20th Century Fox’s “The Art Of Racing In The Rain” held at El Capitan Theatre on August 1, 2019 in Los Angeles, California

Kevin Costner’s estranged wifeChristineisn’t happy with howtheir three kidslearned of their split.

“The children’s welfare has always been my highest priority, and I was concerned they would find out about the divorce before Kevin and I could tell them. It was important for me that we tell the children in person and together,” Christine alleges in the documents.

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Christine Baumgartner, Kevin Costner at the “Hidden Figures” New York Special Screening

Christine says she expressed her concerns with Kevin that the kids would hear the news through an “outside source,” shared “several articles about the importance of talking to the children as a united front” and believed they would go about it together.

“He disregarded my proposal to do what I felt was right based on research and my relationship with the children. Instead, he insisted that he had the right to tell them that we were getting divorced ‘first’ and tell them privately ‘without me present,'” she continues in her claims.

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Christine Baumgartner and Kevin Costner

A rep for theField of Dreamsactor confirmed to PEOPLE on May 2 that he and his wife of 18 years were breaking up after she filed for divorce. Christine listed their date of separation as April 11, and cited irreconcilable differences.

A source close to the actor notes that Christine filed for divorce while Kevin was filming on location. “He FaceTimes all the time with the kids when he is away working,” says the source.

The pairmarried in September 2004. Aside from Cayden, Hayes and Grace, Costner is also dad tofour older children from previous relationships: Annie, Lily, Joe and Liam.

source: people.com