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I love how you write Cas lol

Her expression remained firm but her body withered, her shoulders sagging and her tail drooped. So, she was not even marking properly it would seem. She was perhaps a bit dramatic in feeling that she could do nothing right at all, but nonetheless that feeling struck her, hot and cold all at once, sharp and painful. It was bitterness that made it so. She was still angered at her circumstances, having been removed from a life she had been comfortable in. Try as she may, she simple did not possess the adaptability of a truly wild animal, her determination was much too fleeting, and much too fragile.

So, this was Lasher's son. "I'm Kit," she reciprocated. His next statement however, caused her countenance to shift. He ears turned back, fanning down toward her skull, and her mouth twitched. "Yeah," she said flatly. "So what?" She was defensive, certainly.