Born in Whitefish, Montana, Squires grew up in Everett, Washington and went to Catholic schools.

Squires received her associate degree in arts and science from Everett Community College.

She then returned to Montana and went to the Missoula Vocational Technical Center and received her LPN license in 1967.

[1] Squires served as a Democratic member of the Montana House of Representatives for the 96th district from 2010 to 2015.

[2] From 2002 to 2010, she was a member of the Montana Senate, representing District 48, where she served as Majority Whip.