Context:
It's late. Real late - and Widowmaker has very easily infiltrated Overwatch HQ with only one purpose: To eliminate a certain heroine.
Only, it's not a hit. Tracer had issued a private challenge to Widowmaker, and as rivals, it was a no-brainer to accept, given she'd be able to remove a key member of Overwatch AND settle a score at the same time.
With the security systems disabled, and no one in the know, she would meet with Tracer for a showdown. No weapons, no interference.
It was hard to not feel somewhat excited.