Gelsy graduated from UC Berkeley where she majored in Legal Studies with a concentration of criminal justice.
During her time at Berkeley, Gelsy demonstrated her passion for serving underrepresented communities by interning at Berkeley Law's Death Penalty Clinic, volunteering at Legal Services for Prisoners with Children, and working at a private criminal and family law firm. She was also a part of a Chicana/Latina based sorority, Phi Lambda Rho, where she served as academic chair hosting several academic and professional development events. Gelsy is very family oriented, enjoys cooking, loves to travel, and is an avid sunset lover.