A former professor at the University of Buffalo and a former director of The RPSC, she retired to Sarasota with her husband, David, according to a memorial published in the July/August issue of The Canadian Philatelist. Triggle was born on April 7, 1935, in Bridgend, South Wales. She began collecting as a teenager but put her hobby aside as she raised a family.
In the 1970s, she resumed her philatelic endeavours and developed award-winning exhibits on fish and coal as well as postal history, revenues and stationery.
In 2006, she was named a distinguished topical philatelist, the most prestigious honour bestowed by the American Topical Association (ATA). She won many international awards and served on many philatelic boards and associations throughout her life and was an accredited judge with both the ATA and American Philatelic Society (APS), serving as the U.S. commissioner for several international exhibitions. She also taught online courses for beginning collectors with the APS.