Scratching marks with my heels and flogger on my skinny slavegirls back

I will punish very hard my skinny slavegirl. She spent 72 hours in my medieval prison, laying on straw but she resist more then any other loser male. I took her out only for flogging, beating ore other sadistic torment of my mind. This time I will scratch her fragile back with my heels and push my sharp stiletto heels deep in her skin. But it is not enough : I will enter and flogg her intensly until she can not take any more. I adore how she cryes.