Lovely work! I appreciate images of Sally that show her what she does best - using her noggin to help the Freedom Fighters in any way she can. Exhaustion won't deprive her of burning the midnight oil on a crucial.... uh.... what is that exactly? Maybe adding some more detail to the paper instead of random scribbles would give this picture more context. The red outline also tends to clash with the shading in certain areas, like the left side of her hair. I uploaded a coloured line art tutorial that I think would help. Still, this is some juicy stuff from an experienced Sally artist.
"Staring blindly into space, Getting up to splash my face, Trying hard to stay awake, Wond'ring how much I can take. Should I try to do some more? Twenty-five, or six, to four." -from 25 or 6 to 4 by Chicago