She was born in Puerto Rico on June 5, 1939. Sonia graduated from high school in Puerto Rico and received an Associates Degree from Legal Academy in Puerto Rico. She was married to Daniel Rivera Rivera in June 1955.
Sonia had a career in Legal Business for the Santander Attorney Firm. She had a passion for making others laugh. She was preceded in death by her parents, spouse, and some siblings. She survived by her siblings and children.