In 1962 per electoral rolls for 101 Lessingham Avenue, Wandsworth (this was the family home from 1936) she is living with her brother and a sister who look like they also were unmarried:
Minnie Lorraine b.14/5/1919, d. Jan. 2005 Kingston upon Thames
John Robert b.20/7/1925, d. Mar.1981 Wandsworth
Annette