It could be digital. The ones with the cool bleeds are far too sharp on the bleed to not run into the clean line art. So either she cut out the clean parts and pasted them on top of some bled ink, or she photoshopped the ink around the line art.
As far as the ink splatter one goes (middle, post #2), I used to mask off what I drew with low tack tape and then used a toothbrush dipped in ink to shoot it on. You drag a toothpick across the top and sort of aim it at the paper. Takes a while to get the hang of it, don't wear anything nice!
I'm now thinking of doing the next runway illustration in this style, just to see if I can pull it off.