The solution
Lyra was still processing everything that the females said. The world that they lived in was not an easy place for especially females to survive. With ferals, strays, and other dangers lurking around, women here are required to have multiple mates, and that too strong one if possible. These were not the only things that females had to worry about because, after safety, the next important aspect of survival was hunting. And without having their beast forms, it was almost impossible and far too risky for females to hunt in the wild.