Tattletale/Lisa from J. C. McCrae's web serial Worm. parahumans.wordpress.com/
Tattletale. She figures stuff out from minimal clues. WAY more useful than it sounds. Read Worm.
I like this better than the Skitter one, mainly because I could actually find a mask for her and her costume was more simple overall. Not being the protagonist helps too. Only real deviation from description is that her hair is in a ponytail, it looked better this way with the hair options I had.
Created in Daz3D.
Try avoid spoilers in comments if spoiling things is a thing you might do.
Download for huge version.