In 1888, Martin was accepted to Trinity College in Toronto. And in 1890, Martin graduated with a Bachelor of Arts in Mathematics at the age of sixteen, which was almost unheard of because of the masculinity associated with that field.
In 1891, Martin submitted a petition to the Law Society of Upper Canada to permit her to become a student member, a prerequisite to articling as a clerk, attending lectures and sitting the exams required to receive a certificate of fitness to practice as a solicitor.
Her petition was rejected by the Law Society after contentious debate, with the Special Committee reviewing the petition interpreting the statute which incorporated the Law Society as permitting only men to be admitted to the practice of law. W.D. Balfour sponsored a bill that provided that the word "person" in the Law Society's statute should be interpreted to include females as well as males. Martin’s cause was also supported by prominent women of the day including Emily Stowe and Lady Aberdeen. With the support of the Premier, Oliver Mowat, legislation was passed on April 13, 1892, and permitted the admission of women as solicitors. As Canada prepared to enter the 20th century, women were barred from participation in, let alone any influence on or control over, the legal system at its fullest -- women could not be voters, legislators, coroners, magistrates, judges or jurors. They were visible in the courts as litigants, witnesses & accused persons.
In later life, Martin ran for Toronto City Council in Ward 2 but was defeated in the 1920 municipal election.
In 1989, the provincial government announced that Martin was to be honoured by having the building housing the Ministry of the Attorney General named after her. The