YOU can't turn back time. And the hardships in the past can leave scars on the heart. Hera may not show how hurt she was all through the year but Mary could feel it. Yes, Hera did cry many times after she left Achilles's side. However, as days go by, Hera change until she started to bury the past in the deep pit.
She saw how Hera suffer—got sleepless nights and even have nightmares. And at that moment, she wanted to kill Achilles. And even suggested to Hera get revenge but her friend is too kind and told her that... revenge is for losers and Hera wanted Achilles to realize...