She can see them fine she's just using it to line up the shot. Crosshairs are useful for that!
What I'm waiting for is processors to become small enough to be integrated into the sights, with power supplies that have meaningful lifespans. Then, with a laser ranger, and a bit of code, you could have dynamic bullet drop calculation. Find a way to factor in windage, and suddenly, marksmanship becomes an all-but-obsolete skill...
Also, seeing it in full after commenting, I think she may be resting the gun on the wall in front of her, and that's why she doesn't need a tripod...