Left-hand left-eye

Left-handed shooting, which is rare in Kivotos. As she uses her left hand, she uses her left eye for sights.

Maybe she got lazy of removing the bullets one by one, that she just reloads a new cylinder in...

She has a clenched fist, apparently to increase accuracy for herself when shooting one handed,

but it could be a habit from her holding a baby rattle. (The author is calling her a baby)