I do not understand how. Though I do know that Gosetsu--this one's namesake? [With a light touch to the serpent who is usually coiled around her waist.] He named me 'Tsuyu' when I lost my memory. To protect me, I should guess.

[And yet when she'd regained her memory, how angry she had been. Yotsuyu had refused to accept the old samurai's kindness--though had she the choice to make again, she might very well change her mind...]

I do not see how there is any difference. Save brevity, I suppose. I'd not thought you would need that. 'Tis not as if we've had many battles to fight, here.