I have always had success with using the saliva of the person whose blood it is that stained the fabric... My kids used to think I was weird asking them to put some of their saliva on a q-tip or cotton ball but it worked every time. I have also used a diluted peroxide solution of half water and half peroxide on a q-tip and worked it into the area. Make sure you rinse well with a q-tip dipped in straight water after you get the spot out. Peroxide is hard on fabric. Good luck to your grandma. Hope she is well and out of the hospital soon.