Caedus didn't waste his time arguing back. He was already inside of her mind, pushing through her pathetic defenses as he reached into her mind and her memories. He quickly pushed inside her mind, and found out her fears and desires. And knew exactly how to play up to those fears. He increased her fear, her paranoia, her intolerance, made her more of what she already had bottled up inside of her. And just to make sure nothing went wrong, he erased her memories of this encounter. She would never realize that they had fought today, and would go on with the rest of her days, certain he would hunt her down. It was quite subtle. Her memory altered, her personality made more prickly and more likely to offend Amelia and others...Tenel Ka would balance the scales all on her own.
He existed the alley. He had accomplished what he came for. Now, it was up to Tenel Ka to blink and berate herself for making a wrong turn.