How is Catherine characterized as a quintessential Suffragette?

Catherine, Ronnie's sister, is a combative woman who is a suffragette, and participates in many protests trying to fight for the right to vote for women. Catherine is very involved in the movement, wanting women to have voting rites, and equality, to men. She wants better representation for women and for them to be given more independence. As a result, Catherine has no problem challenging the men who surround her.