With Britney Spears back in rehab, her family is still concerned about her well-being.

Her father, Jamie Spears, 54, told FOX News from his home in Louisiana on Thursday that Spears is "a sick little girl. ... We're just trying to take care of her."

He added that his daughter's problems are "not about what other people think" and that he and Spears's mom, Lynne, are "concerned about our daughter."

Meanwhile, a publicist for Kevin Federline's attorney, Mark Vincent Kaplan, told FOX News that Federline and Kaplan had never called for an emergency family-court hearing, which was reportedly due to take place in Los Angeles on Thursday morning and then apparently canceled.

The rep, Michael Sands, said they believed someone made up the story about the hearing and told Los Angeles Superior Court spokesman Allan Parachini about it.

"Kevin continues to be a very focused father with his children with hands-on management," Kaplan said in a statement read by Sands.

One person, at least, agrees with that assessment: Spears's childhood friend and first husband, Jason Alexander, whom Spears wed in Las Vegas in 2004 (their marriage was annulled 55 hours later).

Federline is "a good dude," Alexander, 25, told PEOPLE on Tuesday, the day before Spears checked out of the Promises rehab center after a one-day stay. "I know he takes care of those kids."

Alexander, who in November called Federline "an idiot," now thinks Spears's estranged husband "just got caught up and manipulated," he says. "Maybe getting Kevin out of her life wasn't the best thing for her."