Raiden stood there cowering by the back door as Briareos let Thetis in. There was a wave of emotions bottled inside the little sea halfling. Poseidon had abandoned her and left her alone. He was there and then just dropped out of the picture. Her little heart was shattered, she was empty inside and had been denying the hurt ever since.
She had found console here with Briareos because he too was an empty being that had been shunned. Now he too wanted to throw her away and Raiden wasn't having it.