J. Jeffrey has a background in child studies. She has worked with children for more than thirty-five years, with 10 of them being a hockey mom. Watching her child's sports with enjoyment and pride inspired her to write Mattie Keller's story.

Jeffrey's work won first honourable mention (Kay Parley Prize) in Canadian Stories' creative non-fiction category in 2016, and has been featured in Alberta Hockey Magazine.

Jeffrey lives in Calgary, Alberta and Mattie and the Wolverines is her first book. Stayed tuned for more on Mattie Keller!