ET has the latest...

New details are emerging about Heather Locklear's recent four-week stay at the Sierra Tucson rehab facility in Arizona, where she was treated for depression and anxiety.

A source is telling the Chicago Sun-Times today that she received daily calls from her ex-husband and Bon Jovi guitarist Richie Sambora.

Heather also received company from her longtime boyfriend Jack Wagner and was in constant contact with her 10-year-old daughter Ava. "That helped Heather get through the program," a source tells the paper. "She knew that little girl was back home waiting for her, and she talked about her constantly.''

Meanwhile, fellow rehab members are speaking out about spending time in the facility with the veteran actress.

''[She] couldn't have been warmer or more approachable," one source says. "There was no diva behavior. She was totally genuine, down-to-earth and warm."