At the time of Wonder Woman #183 (July-August, 1969) by Mike Sekowsky and Dick Giordano, when she had to "Return To Paradise Island!"...
...after Paradise Island had been shunted away into another dimension, and Wonder Woman was now the fighting Diana Prince (without powers due to the island leaving the dimension of Earth-1), Diana had to deal with her mother in a coma.
Diana had to fight the forces of Ares, who were invading the island to gain the power to traverse dimensions, all the while worrying about her mom.
As much as Diana and Hippolyta had been at odds, Diana was still there for her mom.
Happy Mother's Day!