Her return to Schweriner SC in 2003 and the appointment of Giovanni Guidetti as the national team head coach in 2006, who decided to use her as a setter (her original position), provided Weiß with opportunities and her performances started to improve. In 2005–06, she won the German Bundesliga (championship) and Cup. In the following season she finished third at the 2006–07 CEV Top Teams Cup, won the German Cup again and despite missing on the championship, was elected the best setter of the Bundesliga. Her performances at the 2006 FIVB Volleyball Women's World Championship were praised by Guidetti, who recognized her improvement. In August 2008, she decided to look for new challenges and leave Schweriner SC.