No in depth comments were made by Kidman, but Page 6 from the /New York Post released this:

JASON Beghe isn’t the only former Scientologist who wants nothing to do with the church. Nicole Kidman , a Catholic, has limited contact with her adopted kids by Tom Cruise, Isabella and Connor, who are deeply entrenched in Scientology. At the New York premiere of Ian Halperin’s film, “His Highness Hollywood,” a Scientology insider told Halperin that Kidman “wants her kids out of the church.” Halperin beat up on the faith in his book, “Hollywood Undercover,” and said he wasn’t surprised when, during the premiere, “the projector had been sabotaged.”