NEW : She was `` a pioneer and relentless advocate of green design , '' RFK Jr. 's family says . `` It 's very hard being ... a blood Kennedy or being married to one , '' biographer says . Mary Kennedy was n't divorced from Robert Kennedy Jr. , family attorney says . TL;DR The late Sen. Ted Kennedy's daughter is suing her father for allegedly failing to pay more than $700,000 in child support over the past decade.
NEW : She was `` a pioneer and relentless advocate of green design , '' RFK Jr. 's family says . `` It 's very hard being ... a blood Kennedy or being married to one , '' biographer says . Mary Kennedy was n't divorced from Robert Kennedy Jr. , family attorney says . Robert F. Kennedy Jr. filed for divorce from her in 2010 .