Sarah Mueller (Biel-St. Gallen, SUI) won 5-3 over Switzerland's Xenia Schwaller in the Bronze Medal game at the 2019 Braehead Junior Invitational in Glasgow, Scotland. of the 2019 Braehead Junior Invitational in Glasgow, Scotland; Sarah Mueller (Biel-St. Gallen, SUI) won 5-3 over Switzerland's Xenia Schwaller in the Bronze Medal game at the 2019 Braehead Junior Invitational in Glasgow, Scotland. Mueller lost 4-2 to Norway's Maia Ramsfjell in the semifinals to drop into the third place game. of the 2019 Braehead Junior Invitational in Glasgow, Scotland; and won 8-4 over Scotland's Lisa Davie in the quarterfinals. of the 2019 Braehead Junior Invitational in Glasgow, Scotland;
 
Mueller finished 2-2 in the 0-team qualifying round. . In their opening game, Mueller lost 6-2 to Scotland's Beth Farmer, then responded with a 7-6 win over Switzerland's Fabienne Rieder. Mueller went on to lose 6-3 against Denmark's Mathilde Halse. Mueller responded with a 7-3 win over Scotland's Beth Farmer in their final qualifying round match.
 
. For week 15 of the event schedule, Mueller did not improve upon their best events, remaining at th place on the World Ranking Standings with total points. Mueller ranks th overall on the Year-to-Date rankings with points earned so far this season.