Chapter 747: Wives united means an invincible group.
In the end, there was no deal. After all, too much information was lacking to make one. Still, Hera had already performed the greatest act of betrayal by cutting off Zeus' private parts [Consequently saving hundreds of men and women from being abused by him.]
Women like Scathach, Jeanne, Sasha, Ruby, and Hestia supported 'hiding' Hera from the God-King's hostile eyes.
Violet was reluctant to agree since such actions would not benefit their group in the near future, but she accepted once Ruby explained her thoughts.
To summarize the explanation, it would be that they could use Hera to 'validate' the group of Goddesses that 'fled' from Mount Olympus. Such action in the past would have been impossible, but since Olympus was in a civil war, and everyone knew that Zeus was getting crazier every day, this explanation would be more accepted than in the past.