Besides tennis she sang (releasing an album in 1959), did some bit acting (the Horsesoldiers the same year) and later played the LPGA tour with limited success.
Gibson won a little known women's pro tournament in 1960 in Cleveland. She beat Betz 7-5 in the 3rd set of the final. This was the only women's tournament until 1968. Before 1968 there were two women tours (Gibson did one with Sexpot Karol Fageros touring with the Harlem Globetroters) but no actual tournaments except in Cleveland. I wish I knew the date, how many played, etc!