In 2008, underwent a heart transplant, and amazingly went on to have a full recovery where she trained Mucho Macho Man who ran in the 2011 Kentucky Derby.
Ritvo has been training since 1987, when she took out her trainer's license at Suffolk Downs at age 18, but she comes from a racing family and has been around the track for most of her life. She is the daughter of Peter Petro, a long-time owner
Between 1990 and 1998, Kathy won 150 races, among those victories were seven stakes.
Kathy stables her string in Saratoga and Belmont (while in NY) and at Gulfstream when heading south to Florida for the winter meets.