The tone of Amma in the passage is best described as 'Protest'. Here's the rationalization:
1. Understanding Amma's Views: Amma strongly advocates women's rights and recognizes the discrimination and inequality between men and women. However, she does not engage with broader theories of gender and patriarchy. This illustrates her awareness and discontent with the societal norms.
2. Dismissal of Western Feminist Views: Amma dismisses Betty Friedan's perspective since it primarily addresses issues pertinent to white middle-class women in the US, suggesting Amma's concern with more immediate, perhaps local issues that affected her daily life.
3. Role Conformity with Reluctance: Amma continues to fulfill traditional roles as a mother and wife, yet often expresses dissatisfaction through a poignant metaphor: "I am a doormat on which everyone wipes their emotional dirt off". This clearly reflects her silent protest against her circumstances.
By examining these elements, it becomes evident that Amma's tone is not one of contentment, resignation, or compromise but rather of protest against her situation and the broader societal gender discrimination.