[1] Arruti was born in San Sebastián in 1970 and started playing golf at the age of seven, as her father José Arruti Lizaso was a club pro at Real Golf Club de San Sebastián.

[2] In 1990, Arruti lost the final of the Spanish International Ladies Amateur Championship to Delphine Bourson, 4 and 3, and was runner-up at the European Ladies Amateur Championship in Switzerland a stroke behind Martina Koch.

[5] Arruti won bronze at the 1991 Mediterranean Games in Athens, Greece in the team event together with Esther Valera and Macarena Campomanes.

[2] In 1993, her rookie season, she beat Annika Sörenstam by two strokes to win the Ladies Italian Open at Golf Club Lignano near Venice.

[1] In 1995, she won the Lalla Meryem Cup in Morocco, and was runner-up at the Italian Ladies' Open, held at Il Picciolo Golf Club in Sicily, a stroke behind Denise Booker.