To be perfectly honest, she was expecting an attack of some kind. There's no open hostility in her own actions, but she would have considered herself stupid to think that he wouldn't try to attack her. They are playing a death game, after all.

She lets him approach, cautiously shifting her weight to the balls of her feet, ready to move if needed. As soon as his quick movements register in her mind, Terezi is already jumping back from the assault, kicking up sand in her wake.

"A moment, if you don't mind! I recall a certain messiah and a certain dragon, and a certain talk of mutual acquisition of carnage. Won't you at least hear me out?" The words are hastily spoken, but not panicked.

"If you have no drops of magnanimity, then perhaps we can barter in drops of blood or drops of water."