Playing as Carron Topping, Jerram was first chosen to play for the Silver Ferns, the New Zealand national netball team, in 1990, and would play for them on 31 occasions. In 1991 she was vice-captain of the team that won a silver medal at the world championships held in Sydney, Australia, the first world championships to be held indoors. She was also a member of the team that finished third in the 1995 world championships, held in Birmingham, England.[2][5][6][7]
After the 1995 world championships, Jerram accompanied her husband to Texas A&M University in College Station, Texas, USA, where he took a 4-year internship and residency programme in small-animal surgery. Three of their four children were born in the USA. On their return to New Zealand, she began to play netball again, playing for the Auckland Diamonds in 2005. She is active in several sports and runs marathons. She was a member of the High Performance Committee of Netball NZ in the early 2000s and served on the Auckland Diamonds netball board in 2007-07. She has also coached or managed various netball, cricket and field hockey teams. In 2021 she was appointed as a board member of Auckland Hockey.[1][2][5][8]