Stoyles was born in
Bay de Verde, the daughter of Jeremiah and Ethel Woodrow. She moved to Mount Pearl as a teenager and volunteered for many organizations, including the
Canadian Cancer Society and the
Salvation Army. She was also a founding member of the Save Our People Action Committee. Stoyles was first elected to the Mount Pearl City Council in 1996. She entered provincial politics in 2021 after winning the Liberal nomination for Mount Pearl North. In a close election, Stoyles defeated incumbent
Progressive Conservative (PC) MHA
Jim Lester. Lester would later challenge the election results in the
Supreme Court of Newfoundland and Labrador. Stoyles was re-elected in the
2025 Newfoundland and Labrador general election. ==Election results==