Yeahhh, he didn't think that would fly, but while there was nothing gained, there wasn't much lost either.

"I trust this won't be an issue."

He knows Widowmaker can keep a lid on her feelings, and ultimately her own agenda should she have any. But Sombra on the other hand... if she witnessed something as extraordinary as truly upsetting Widowmaker of all people, Reaper gets the feeling that their curious little hacker may end up trying to pry a little more. Perhaps not directly from Widowmaker, but...somehow. Who even knows with that woman?

He could be wrong, but he never lets any pinch of paranoia go unattended in some way or another.