Zuri was a project to accomplish beauty blood. She was a Shell. She was one of the three lycan's legacies. An object for the lycan to get their ultimate treasure. The power to control the world.
However, beauty blood was a complicated thing to accomplish, not like the other two legacies, which were inanimate objects. Beauty blood involved feeling and attachment. It required years of nurturing.
More importantly, there was no history of accomplishment related to beauty blood aside from the first lycan, who actually managed to complete it.
The previous lycans, who tried to accomplish it, would always be 'almost', so close to get it done before fail after fail came their way.
And the crucial part here was the attachment.
The attachment between the Shell to the lycan.