In 1999 she became goalkeeper on the senior team and would shortly taste major success. That year Tipperary reached their first-ever senior All-Ireland final where they faced Kilkenny. Tipp emerged victorious by a single point and Delaney claimed her first senior All-Ireland medal. In 2000 Delaney was appointed captain of Tipperary’s senior camogie team. Once again her side reached the All-Ireland final but this time the opponents were Cork. Tipp won on the day and Delaney captured her second senior All-Ireland medal. Her performance on the day earned her the RTÉ Player of the Match award. In 2001 Tipperary made it three-in-a-row following a comprehensive defeat of Kilkenny.