Doreen was born in Midale, SK and grew up in the Macoun-Estevan area. Upon the completion of her education, Doreen and her husband Vic ran the family farm and raised two children, Terry and Trisha.

Ms. Eagles was first elected to represent the Estevan riding in the 1999 provincial general election.  She was re-elected in 2003 and again in 2007. During her terms in Opposition, Ms. Eagles served as Caucus Whip and held a number of critic portfolios.

In the caucus, Ms. Eagles is a member of the Human Services Standing Policy Committee.  She is also a member of two legislative committees: the Standing Committee on Human Services and The Privileges House Committee.  Ms. Eagles also sits on the Board of Internal Economy.