R. Tzvi Pesach Frank on Whether a 5-Year-Old's Divorce Counts (12 Nisan)

שו"ת הר צבי אה"ע ל"ד 12 Nisan 5684 (1924)

A mother married her daughter off at the age of 5 (probably to secure her future). Soon after, the two decided to make Aliyah instead and, 15 years later, the daughter wants to marry a Kohen. Does her first divorce count?