Severus smiles at her.

It's probably not the reaction she wanted.

Wan, slightly sad but only in a distant, bitter way. It looks unnerving, because Severus doesn't smile very much to begin with, making even his genuine smiles (which this really isn't) mildly off-putting.

"There's nothing you can do to me that someone else on this ship hasn't already done tenfold, over and over again."