I hope you don't plan on riding her until all the sores are healed. Poor thing has been the victim of bad horsemanship. Keep the wounds clean (betadine) and time. Certainly some antibiotics if there is anys sign of infection (pus, redness, swelling).
I hate to see things like this!
No I have not been riding her...she has been having a rest. I was not impressed with the previous owner, he keeps his horses where I keep Abby and her brother is quite skinny so yes Im not quite a big fan of him. I checked them today and they are much better! Thanks for your advice!