In 1933, she was appointed director of the Friends of Handicraft establishment in Växjö. For her works displayed at the 1929 Barcelona World Fair, she won a silver medal. She also participated in the 1935 Brussels Fair and the 1937 Paris Fair. While in Växjö, she met Maja Andersson Wirde with whom she established the textile firm Södra Sveriges Kyrkliga Textil in 1939 which specialized in church fabrics. Wirde maintained a studio in Algutsboda while Synnergren had her own workshop in Lund. She created her own chasubles and antepedia while designing patterns for the team of embroiderers employed by the firm as it expanded in 1940s.