Her husband Frederic Prinz von Anhalt had previously described Gabor as unresponsive. On Saturday, the actress was able to whisper a few words to her husband for the first time since her surgery.
Previous reports from Gabor's husband and daughter were conflicting. Von Anhalt had said that his wife was not responding to human contact, whereas Hilton told media that her mother was merely adjusting to the medications as she healed from surgery.
The Hungarian-born actress, the middle of three sisters, is the only surviving sibling. Magda, who was the oldest, died in 1997 at age 82, and Eva, the youngest, died in 1995 at age 76.
Gabor appeared in dozens of films in the 1950s and 1960s, including the Orson Welles 1958 classic "A Touch of Evil."
The actress has had to use a wheelchair after being partially paralyzed in a 2002 car accident.
AP and CNS contributed to this report.