Pedzisa mutsara unotevera: Mabergs akatungamirira boka reSweden revakadzi vechidiki mu2011 uye
2012 World Junior Curling Championships, pamapoka akapfuura naJonna McManus naSara McManus zvichiteerana. Muzviitiko zvose zviri zviviri, Sweden yakava yechina. Mabergs akatamba wechitatu pachikwata cheSweden, chakatungamirwa naSara McManus, pa2013 World Junior Curling Championships. Chikwata ichocho chaizova chechishanu. Mabergs akatamba anotungamira yeYunivhesiti yeGävle timu inomiririra Sweden (uye zvakare, yakasvetwa naSara McManus) pa2015 Winter Universiade. Ikoko, chikwata chacho chakapedza chiri chechina.