Complex sentence: She was also active in several women's organizations, including the Women's Freedom League, arguing that the kinship she felt between humans and non-humans had implications for the enfranchisement and education of women.
Split into simpler sentences: She was also active in several women's organizations, including the Women's Freedom League. She believed that the same sense of kinship between humans and non-humans had implications for the enfranchisement and education of women.