Kenney was born in Edmundston, New Brunswick and was raised in Fort Kent. She graduated from Fort Kent Community High School with honors in 1994. After graduation, Kenney wanted to try out city life, so she applied and was accepted to Emerson College in Boston. She attended Emerson for four years and worked full-time during that period. She graduated Emerson College, cum laude, in 1998 and returned to Portland to attend the University of Maine School of Law.

Prior to beginning law school, she married her high school boyfriend. She continued to work while attending law school and, in her second year of law school became pregnant with her first child. She continued to attend law school, using the semester after her son was born to focus on her independent writing project. As a result she graduated law school in December of 2001. At that same time she separated from her husband and relocated to the northern Maine with her son. Kenney began working as an advocate for the Battered Women's Project, studying for the bar exam, going through a divorce proceeding and adjusting to being a single mother.

In May of 2002, she was sworn in as an attorney. She then became the first attorney for the Battered Women's Law Project.

In October of 2002, Kenney left that position and became an assistant attorney general representing the Department of Health and Human Services in child protection and child support matters. She remained in that position for seven and a half years, commuting from Houlton to Caribou on an almost daily basis for four of those years.

That commute proved taxing on her family and was a large reason she decided to open her own practice in Houlton. Kenney also works part-time for Legal Services for the Elderly in Aroostook County. Those over the age of 60 who need assistance through legal services can call the helpline at 1-800-750-5353. Kenney resides in Houlton with her husband Karter and her three children. She can be reached at 521-5678.