Published: Sep 21, 2011 4:57 PM EDT

WASHINGTON (AP) - Kara Kennedy, the oldest of three children of the late Sen. Ted Kennedy, was being remembered at funeral services as a thoughtful friend and devoted mother who also had a mischievous side.
    
During the services at Holy Trinity Church in Washington on Wednesday, her brother Ted Kennedy Jr. said she was "always up for anything and always there to help."
    
Kara Kennedy died Friday after a workout at a Washington health club. The 51-year-old had been diagnosed with lung cancer in 2002 but underwent successful surgery and treatment. Her brother Patrick Kennedy said the treatment left her physically weakened, however, and that her heart gave out.
    
Among those attending the funeral were Vice President Joe Biden, Massachusetts Sen. John Kerry, and relatives Caroline Kennedy and Maria Shriver.

(Copyright 2011 The Associated Press. All rights reserved. This material may not be published, broadcast, rewritten or redistributed.)