In addition to BK Heid, 13 other teams from 6 different countries played in Girls 21. They were divided into 2 different groups, whereof BK Heid could be found in Group 1 together with HK Aranäs, Lugi HF, India HHC, Kvibergs HK, SC Corinthians and GTV Basel. BK Heid continued to A-Play-off after reaching 2:nd place in Group 1. In the playoff they made it to Semi final, but lost it against IK Sävehof with 15-29. In the Final, IK Sävehof won over HK Aranäs and became the winner of A-Play-off in Girls 21. BK Heid also participated in Girls 21 during Partille Cup 2016. They won A-Play-off, after beating Önnereds HK in the final with 15-12.