Is this blood in the stool?

[rpguzman]

She was treated for endoparasite only a couple of weeks after I got here (nealy three months ago, now). Is it possible they could have come back?

[gregmonsta]

She was treated for endoparasite only a couple of weeks after I got here (nealy three months ago, now). Is it possible they could have come back?

If you've already treated her for those then it should be fine, can depend on the set up at the time. Tank needs to be on a quarantine style cleaning routine with all feaces removed as soon as it's spotted to ensure that there won't be any recurrant parasitations.
Ask your vet when you next check. When I last had to worm a snake there were two courses of medication two weeks apart to clear the problem as the treatment used only dealt with the adult worms and not the eggs - so the second treatment allowed the medication to eradicate the then hatched worm larvae.
Bloddy stools can be a sign of types of hookworms.

[rpguzman]

The stool didn't seem abnormally smelly.

[adamanteus]

The stool didn't seem abnormally smelly.

Well, that's a good thing.... it rules out Entomoeba invadens, which was my first thought. As Greg says, if it is blood, it may well be hookworms.