Heather Locklear's family is supportive of her engagement to Chris Heisser.A source tells ET that this engagement is «symbolic of how far they have both come,» following the actress' recent arrests, stint in rehab and years of relationship ups and downs.«Heather is healthy, strong, in love and exactly where she wants to be in her life. She has come a very long way since her arrests and those closest to her are incredibly proud,» the source says.