|Scotties Tournament of Hearts|
|Bronze||1996 Thunder Bay|
|Bronze||2000 Prince George|
Arnott was the longtime lead for her sister, Connie Laliberte winning the Scott Tournament of Hearts in 1984 and 1992 and the World Curling Championships in 1984. With Laliberte, Arnott had played in seven national championships (1984, 1992, 1993, 1994, 1995, 1996 and 1999). In 1999-2000, she joined Cathy Overton-Clapham's team as her lead once again returning to the Hearts in 2000.
Arnott replaced Dana Allerton on the Jennifer Jones team midway through the 2006-07 season amidst some outcry from the curling community.  After playing with them at the 2007 Scotties Tournament of Hearts, she was replaced by Dawn Askin as Jones' lead.
After Morris left the Jones team to coach the Rachel Homan team, Arnott became the new coach of team Jones.
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