No one knew about this kind of power that Iris held, aside from Haco and Cane, everyone also was still clueless why the lycan suddenly appeared and managed to take over Cane's body when it had never happened before.
The reason why it could happen was because Iris weakened Cane's wolf spirit, which gave the access to the lycan to dominate Cane's body.
The same thing happened with alpha Gill when Iris hurt his wolf spirit, which rendered him useless and unable to shift into his beast.
But right now, Iris got a better understanding of Na's power within her and her intention was clear. She wanted Mason to die.
For what Mason had put her through and all the slaves that he had tortured to their death and misery, Iris wanted him to die. This quick death was not something he deserved, but with his death, Iris managed to learn something; she held a power to kill a shifter without even touching them!
