Galdiano represented the United States at the Curtis Cup and Women's World Amateur Team Championship in 2016. She won two and lost two in the former and finished equal 29th in the latter. She was leading qualifier in the U.S. Women’s Amateur Championship, setting a championship-record of 9-under 133. She tied for second in the 2016 Junior PGA Championship and was third in the AJGA Yani Tseng. She is a former three-time Rolex All-American. In 2015 she won the Canadian Women’s Amateur Championship and placed joint 42nd in the U.S. Women’s Open. She also played in the 2013 and 2011 U.S. Women’s Opens, the latter at the age of 13 that set a record for youngest competitor.