It could've been a scathing glare, or a solemn thoughtful one. Hard to say when he barely glances over at her, not saying anything but keeping the mask's hollow stare trained on her.

He can already see how she got to Widowmaker, if she says such things in such a manner. It doesn't bother him so much anymore, least of all from Sombra. He already knows to treat most of her so-called 'casual' conversations as an attempt to draw more from him. From the most banal to the most incriminating, her thirst for uncovering half-truths is something he's well-acquainted with. After a long, dramatic pause, he grunts.

"Lots of things remind me of what I used to be." His very mission, the people it revolves around...

Sometimes, he's a little envious of Widowmaker. It would be much easier if he just couldn't feel any emotion at all.