Kammala jumla mai zuwa: A cikin 1990, Kwamitin wasannin Olympic na Duniya da Juan Antonio Samaranch suna neman hanyoyin da za su ƙara yawan abubuwan da suka faru a wasannin Olympics na mata, kuma sun ba da shawarar ga shugaban IIHF Günther Sabetzki, tare da alkawarin cewa idan ya yi nasara, Samaranch zai hanzarta shigar da wasan a cikin wasannin Olympics. Sabetzki ya tambayi Costello idan CAHA za ta shirya gasar zakarun duniya ta mata, kuma ya yarda muddin za a iya karbar bakuncin kusa da ofisoshin CAHA a Ottawa, don rage kashe kudi. Costello ya kula da kafa kungiyar 'yan mata ta kasar Canada ta hockey ta kankara, da kuma budewa
1990 IIHF Women's World Championship, wanda ya haifar da ci gaban hockey mata a Kanada,