Rideout was born into a musical family of Scots descent and grew up in the rural communities of Saline, Michigan and Cliff Island, Maine.
In 2003 she incorporated her own independent record label, Tulloch Music, Ltd. Rideout's popular album, A Scottish Christmas, became a New York Times‚ "Top Ten Holiday Best Seller".
She is a member of the National Academy of Recording Arts and Sciences (NARAS), having served on the Board of Governors for the Washington D.C. branch.
Rideout discontinued competing to become an adjudicator and professional recording artist and has maintained a consistently high profile in the Celtic music scene.
In 2003, she incorporated her own record label, Tulloch Music, Ltd. Bryan Aspey, Matt Bell, Barnaby Brown, The City of Washington Pipe Band, Chris Caswell, Tony Cuffe, John Doyle, Ensemble Galilei, Cathy Fink & Marcy Marxer, Paula and Charlie Glendinning, Grace Griffith, Grant Herreid, Hesperus, Steve Holloway, Andy Hunter, Billy Jackson, Linda Kirk, Allan MacDonald, Ronn MacFarlane, Kevin McCrae, Patrick Molard, The Musicians of Edinburgh, Abby Newton, Chris Norman, Simon O'Dwyer, Jerry O'Sullivan, Al Petteway, John Purser, Sue Richards, Betty Rideout, Eric Rigler, Maggie Sansone, Elizabeth Stewart, Sweet Honey in the Rock, Bill Taylor, Athena Tergis.