Mattatall won the 1979 Nova Scotia junior women's title with teammates Faith Tregunno, Susan McCurdy and Debbie Jennex.
At the 1989 Scott Tournament of Hearts, the Canadian national women's championship, the team would finish the round robin with a 7–4 record, and lost in a tiebreaker match.
Mattatall was invited to join the Jones rink as an alternate at the 1997 Scott Tournament of Hearts, the team finished with a 4–7 record, tied for 9th.
Her new rink of Angie Bryant, Lisa MacLeod and Heather Hopkins won the 1998 Nova Scotia Tournament of Hearts.
Mattatall would be invited to be the alternate player for Nova Scotia (skipped by Jill Mouzar) at the 2007 Scotties Tournament of Hearts.
[7] Mattatall has coached the Nova Scotia junior women's curling team skipped by Taylour Stevens since 2019.