Jennifer Aniston's mother, Nancy Dow, has passed away. "It is with great sadness that my brother John and I announce the passing of our Mother Nancy Dow," the actress said in a statement this week. "She was 79 years old and passed peacefully surrounded by family and friends after enduring a long illness." Nancy reportedly suffered from two strokes in recent years, one in 2011 and another the following year. Even though Jen had a strained relationship with her mother in the past, a People source says she is still heartbroken over the loss. "Nancy fought a very long battle, with many ups and downs, and Jennifer is grateful for the happy times they shared," the source revealed. "She is pulling close to her husband and family and feels so supported by their love."