Beyond just her influence on MLK, she had a long and effective history as a civil rights and feminist advocate. Her quiet dignity and call for forgiveness and reconciliation after MLK’s assassination helped prevent the outbreak of hostilities. She was an impressive person in her own right, with a long list of accomplishments both before and after MLK.
Freedom and justice cannot be parceled out in pieces to suit political convenience. I don't believe you can stand for freedom for one group of people and deny it to others.