How did Susan B. Anthony and Elizabeth Cady Stanton become so involved in Women Suffrage?

Susan B. Anthony and Elizabeth Cady Stanton became so involved in women suffrage when the 15th amendment was being outlined. The 15th amendment was to give voting rights to former slaves who were released by President Abraham Lincoln's Emancipation Proclamation. Anthony and Stanton supported this amendment until they found out it was only the right for males to vote. The two women were mad but not worried because they knew that if they worked hard, they could succeed with a separate constitutional amendment "to grant women the franchise" (Gale Virtual). Anthony tried to vote but was prosecuted because voting was only for men. She refused to pay the $100 fine, but that led to thousands of people supporting her from all over the world because they knew Anthony was trying to stick up for women's rights. All of the information I have read about on the primary sources has been the same information I've read about in previous research. I still think the two women are role models- they definitely showed fine examples of how succeeding is possible if you just believe.