Kristen Stewart reportedly is extremely nervous about Robert Pattinson's scheduled TV appearance on Wednesday, Aug. 13, with "The Daily Show with Jon Stewart."

After devastating photos revealed an affair with "Snow White and the Huntsman" director Rupert Sanders in July, Stewart, 22, has been taking it really hard, trying to get her boyfriend of three years back. Pattinson was also shattered with the shocking scandal, but will appear on TV for the firs time since the heartbreaking news.

The 26-year-old "Twilight" actor will appear on "The Daily Show" to promote his new film, "Cosmopolis."

According to RadarOnline.com, Stewart is concerned with the host's sharp tongue and praying that she won't be the butt of his jokes.

"Kristin is very, very nervous about Robert's interview with Jon Stewart on Monday," a source close to the "Twilight" star revealed.

"She's confident that Robert, who has always been such a private person about his personal life, will keep quiet over the cheating scandal.

"But she does have some concerns that Stewart might poke fun at the situation in an attempt to get Robert to open up.

"While she has a sense of humor, this isn't something she wants joked about. Kristen is hurting and doesn't want her heartbreak poked fun at on TV.

"She's crossing her fingers that Jon doesn't go there and instead concentrates on promoting Robert's new movie Cosmopolis," the insider said.

Meanwhile, Stewart has been hiding out, and reports speculate that she's either with her mother of with producer pan Giovanni Agnelli.

According to the New York Daily News, Stewart's mother, Jules-Mann Stewart, a script supervisor, was going about her business in Los Angeles Thursday.

She hasn't really spoken about her daughter's affair, except telling OK! Magazine that, "it's not my affair. My daughter is being hounded."

She did not reveal where her daughter was currently hiding.

Pattinson will also make a second appearance for a sit-down interview on ABC's "Good Morning America" on Wednesday, Aug.15.

According to ABC News, the "GMA" appearance will be a live interview. There is no word yet on who will be asking the questions to Pattinson, but he will be there to promote "Cosmopolis."