One good thing about the shard being of dark magic; Cane can blame his lycan transformation on the shard caused by the “traitor”. And low key absolve himself using dark magic personally and blame Aria (traitor). She deserves it.
I know Aria wants to get rid of Iris but she is so stupid. Honestly all her plans backfire due to her timing. Once it’s found out that she is a traitor, her life will be in the balance.