The photos you posted don't give me a good enough look for me to sex the snake. I think since Casper is such a special snake you need to keep the new snake away from her for at least 90 days. Quarantine this new snake to be sure you're not introducing something that could harm Casper. Quarantine is very important for all new snakes and for the continued good health of currant snakes.
I don't think cannibalism is much of a problem with T. ordinoides.

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