Olivia Wildewasserved with custody papersin the middle of her CinemaCon presentation on Tuesday – andnew video footagefrom the audience shows the moment she realized what the envelope contained at the largest gathering of movie theater owners.

The contents were later confirmed to be legal documents pertaining to her children with ex-fiancéJason Sudeikis, 46. They share one son Otis, 8, and daughter Daisy, 5.

An insider previously told PEOPLE that Wilde was “professional and adult about what happened and made sure the show went on,” which this footage confirms.

The source also shared that Wilde was “was surprised and embarrassed” as she was served the papers onstage in Las Vegas, “but she moved forward with little fuss.”

Olivia Wilde.Frazer Harrison/Getty

Olivia Wilde Goes Viral After She’s Handed Mysterious ‘Confidential’ Envelope During CinemaCon

A source close to Sudeikis told PEOPLE, “Papers were drawn up to establish jurisdiction relating to the children of Ms. Wilde and Mr. Sudeikis.”

“Mr. Sudeikis had no prior knowledge of the time or place that the envelope would have been delivered as this would solely be up to the process service company involved and he would never condone her being served in such an inappropriate manner,” the latter source added.

Family law attorney David Glass, who is not involved in the case, told PEOPLE it is “highly unlikely” that Sudeikis did not know any of thedetails of how Wilde would be served.

“I talked to every one of my clients to get the information on where could we serve him or her,” he said. “We get all that information from them. And if you’re going to go to that sort of extreme length to do it publicly, to do it in an embarrassing way, I can’t see the client not knowing about it.”

Monday saw the release ofthe first trailerforDon’t Worry Darling, which stars Wilde’s boyfriend Harry Styles. The movie opens in theaters Sept. 23.

source: people.com