Her name is Nicoline 
Although it is a good point that nicotine can enter our bloodstream and brain.
Those are great sketches by the way, my only comment is that some side view sketches look flat even though there is a lot of texturing and shading.
There is a little trick originated by Disney that gives a sketch a more 3D feel.
Disney illustrators never draw a face flat when drawn in profile - they always indicate a hint of 3D drawing a piece of the opposite eyebrow, eyelashes and hair. Just that one receded layer brings a drawing to life in 3D.
Look at Junglebrodda’s sketches - they are almost simplistic drawn so flat but they still feel 3D just because of the correctly drawn slight perspective in every sketch. Backlight also works.