After two indoor wins over the mile in Boston and New York, she headed to Australia and won the 1500 m at the Melbourne Track Classic. However, she was not in peak form for the 2006 Commonwealth Games held in the city that month and she lost out in a tactical 1500 m, coming in fifth place. In the final short race to be held at the 2006 IAAF World Cross Country Championships, she managed 22nd place and the removal of the event from future programmes brought an end to Douma-Hussar's participation at the competition. On the outdoor track circuit she had a season's best of 4:03.82 for the 1500 m at the Meeting Gaz de France in Paris and won the national title. She was seventh in the event at the 2006 IAAF World Athletics Final and sixth at the 2006 IAAF World Cup. In 2007, with a year's best run of 4:05.91 minutes, she was chosen for the 2007 World Championships in Athletics, but was eliminated in the first round. Despite this disappointment, she ran a lifetime best of 4:26.76 minutes for the mile two weeks later at the Memorial Van Damme in Belgium and came sixth at the 2007 IAAF World Athletics Final. She also had her second career win at the Fifth Avenue Mile.