Does the preface mention any specific female saints by name, or discuss the role of women as Gurus?

The provided text from the Preface (Chapter 0) does not name any specific female saints. However, it does explicitly include women in the potential forms a Sadguru can take. The author states that a Sadguru can be a 'mother, father, siblings, friend, husband or wife,' clearly indicating that a woman can be a spiritual guide. The text's primary focus is on the universal importance of having a Sadguru, regardless of their caste, religion, age, or gender, and the necessity of serving them with 'body, mind, and soul' to achieve enlightenment, as described in Chapter 0.