Marti returned to top form in 1991, when she improved her -year-old PB to 1.94 during the indoor season, to equal Diana Davies's UK indoor record. She went on to clear 1.91 m to finish a fine fifth in the final at the World Indoor Championships in Seville. At the 1991 World Championships in Tokyo, she failed to reach the final, clearing 1.86 m in the qualifying round. In 1992, she competed at her first Olympic Games in Barcelona, where she achieved an outdoor PB of 1.92 m in the qualifying round before clearing 1.91 m for ninth in the final. She remained the last British woman to reach an Olympic high jump final until Morgan Lake qualified for the 2016 final in Rio. Shortly after the 1992 Games, she improved her outdoor best to 1.93 m.