Reilly is the granddaughter of Canadian musician Tommy Reilly. Her father, David T. Reilly, is a writer and composer and her mother works in production. Reilly's older brother is a DJ. She married her Republic of Doyle co-star Mark O'Brien on January 6, 2013, after having met on the set of the show in 2011.
|2011||Debbie Dazzle||My Babysitter's a Vampire||1 Episode.|
|2012 - 2015||Dr. Emily Grace||Murdoch Mysteries||Season 5: Recurring; Season 6-9: Regular.|
|2014||Charlene Young||Heartland||1 Episode.|
|2016||Chris Thornton||Blindspot||1 Episode.|