べつ
another, different
A blade cuts one card out of the deck and drops it face up, a different suit from everything else on the table. I would bet Sue べつ swapped it: べつ.
別に べつに is this word plus に, and nearly always sits in a negative sentence. 別 on its own is just separate, or another one.
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Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.