She looks nothing like them though. Widowmaker’s face is much more round then Ashe who has harsh cheekbones. Widow’s nose curves upwards while Ashe’s has a straight bridge while the tip of the nose juts out. Widowmaker’s lips are different too. The top goes in like /  \ in a more noticeable way then Ashe’s. I don’t know what it’s called exactly.

While Mercy has more similar features to Ashe (straight bridge, but lacks the pronounced tip and has a square jaw) then Widow maker her jaw isn’t still isn’t as harsh or pronounced. Mercy’s upper lip is thinner then her bottom while Ashe’s lips are the same size top and bottom.

The only thing similar about them in there eyes but that’s a stylistic thing where they use there eyelashes to create more of the shape of the eyes