[5] The following month she played again in the Home Internationals and the week after won the Girls Amateur Championship, beating Sue Bamford, 2 and 1, in the final.

[6][7] In 1978, Aitken won the Helen Holm Scottish Women's Open Championship, 6 strokes ahead of the runner-up.

[19] She also won the Helen Holm Scottish Women's Open Championship for the third time, and was later selected for the 1982 Curtis Cup team.

[21] Aitken made her second appearance in the Vagliano Trophy in 1983 at Woodhall Spa, the Great Britain and Ireland team winning by 14 points to 10.

[22] In 1984 at Royal Troon, she led the qualifying by four strokes and reached the semi-finals of the British Ladies Amateur, before losing to Jody Rosenthal.