When the Bloody Woman had first merged with Beatrix's body, her power was weak because she had been disconnected from Raze's body for a prolonged period. While with Raze, the Bloody Woman existed as a separate, albeit suppressed, entity. Beatrix, however, always knew the entity had to be somewhere inside her, even though she couldn't directly communicate with the Bloody Woman as Raze was able to.
According to Raze, he had assumed that their two identities had fully merged over time, but Beatrix had always harbored a growing fear: that the other personality, or other being, was simply waiting somewhere inside her mind. It was because of this fear that she had figured out the technique of making her own mind completely empty, a meditative state to allow the Bloody Woman to surface and take control. It had worked the last time she was fighting with the Cerebus Guild members, and she thought it would work again to get her out of the impossible fight.
