At the 1992 Summer Paralympics in Barcelona, Spain, Bornemann took part in five events. She won bronze medals in each of the women's 100 metres freestyle S8 and the women's 400 metres freestyle S8 competitions. Bornemann finished fourth at the women's 50-metre freestyle S8 event, and seventh in each of the women's 4 x 100-metre medley S7-10 and the women's 4 x 100-metre freestyle S7-10 events. She was one of four disabled athletes from Canada to partake in the first disabled competitions of the Commonwealth Games in the 1994 edition which was held in Victoria, British Columbia. Bornemann took part in the women's 100-metre freestyle para sport event, finishing sixth in a time of 1 minute, 22.43 seconds. She subsequently qualified to compete as one of 11 swimmers at the 1994 IPC Swimming World Championships in Valletta, Malta. Bornemann placed fourth at the women's 400 metres freestyle S8 event and fifth in the women's 50 metres freestyle S8 competition. She failed to advance beyond the heat rounds at the women's 100 metres freestyle event.