Kardashian filed for divorce from Humphries in October after just 72 days of marriage.
Laura Wasser, Kardashian's attorney, told The AP that Humphries is purposely delaying the case.
"Certainly, they've been separated longer than they've been married," Wasser said, adding that "personal feelings and maybe some media drive is keeping the case alive".
Meanwhile, an insider claimed that Humphries is incapable of letting go.
"He's doing anything he can to get her attention," the insider told Us Weekly.
"She would grant a divorce in a second. But he won't sign the papers," the source continued. "He won't let go."
Kardashian is now dating Kanye West.