Despite the fact that she made her first doubles match on the ITF Women's Circuit in October 2009, she also continued to play in juniors. In 2010, she played qualifying for the Swedish Open but failed to reach main draw. Her first singles tournament was in November 2010 at Stockholm where she defeated German player Alina Wessel in the first round but lost to Alison Van Uytvanck in the second. In 2011, Peterson won only one singles and one doubles match, both at Båstad in May.
