It would not hurt to worm with Valbazen if you can get it. It will treat for capillaria worms that can cause blood in the droppings. Dosage is 1/2 ml given orally, and repeat in 10-14 days. If you have to use SafeGuard equine paste or liquid goat wormer, the dose is 1 ml orally for 5 days in a row, since capillaria worm is a tough one to treat. Enteritis can also cause blood in the droppings. How does she seem otherwise--is she eating, active, and alert? If so, it probably isn't a big deal unless you see more blood, but I would worm her at least. You can also give a low dose of Corid for 5 more days.