never thought of this
Show your girl the vital points on a human being *kidneys/neck/side of head* and teach her how to poke those spots on someone who has their back turned to her. Cop her some pepper spray. When you're nearly unconcious you scream
*suzie throw it out the window, SUZAAAAAAAAAAAAAAAAAAAAAAAYYYYYYYYY!!!!!!!!!!!*
She comes through with the pepper spray first followed by the poke to the kidneys. That in itself will give you the valuable time necessary to escape. The enemy will focus his attention on her, she will run away and he will become more concerned with surviving his injuries. Now if the man on you is high on zombie heroin then mmmm i dont know what to tell you. Its up to her. HOpefully she'll pepper spray and taze, if she really loves you.