In addition to HSC Haltern-Sythen, 96 other teams from 16 different countries played in Girls 13. They were divided into 16 different groups, whereof HSC Haltern-Sythen could be found in Group 11 together with Neistin 2, Önnereds HK 1, Tyresö Handboll, Herkules IF Gul and HEI Håndbold 2. HSC Haltern-Sythen continued to A-Play-off after reaching 3:rd place in Group 11. In the playoff they made it to 1/32 Final, but lost it against 7 Drops/WAT Atzgersdorf with 16-21. In the Final, Skanderborg HB 1 won over BK Ydun 1 and became the winner of A-Play-off in Girls 13. HSC Haltern-Sythen also participated in Girls 12 during Partille Cup 2023. They reached the final in B-Play-off, but lost it against Flint Tønsberg 3 with 10-15 and ended up in second place.