Shyam's chaotic mind holds all of the memories of those lost, therefore she has experienced the life of everyone that died for her creation. Even the worst of those lives were beautiful and not yet ready to end, ripped away from the poor souls that are bound to her.
What else could she see when she looked in the mirror? She owed her creation to the senseless death of others, and in her path for revenge death to those responsible was her only goal. To Shyam, she and death were one.