She was the medalist at the final stage of LET Qualifying School, a nine stroke victory on 19 December 2010 to earn her LET card for 2011. In 2011, she won the New South Wales Open in Australia on the ALPG Tour in her pro debut in January. On the LET, she won the Allianz Ladies Slovak Open in May, Finnair Masters in July, UNIQA Ladies Golf Open in September, and the Hero Women's Indian Open in December. She was a captain's selection to the European team for the 2011 Solheim Cup in Ireland. She ended the year by winning the LET Player of the Year and LET Rookie of the Year awards.
Hedwall missed several tournaments in 2012 due to a hip injury. Nonetheless she still managed to record a career best T-5 at the Kia Classic and made 13 cuts.