I'm glad you're paying close attention, & when we see reddish-brown on most any creature, it's natural to worry that it's dried blood. While we cannot rule it out, let's just say that the odds are well in your favor that it's just the colored substrate being used in your snake's enclosure, or irritation from it. Let's just say we've seen this situation before- your snake isn't the first one to pack some substrate into their nostrils & heat-pits. We all turn into "detectives" when we keep snakes, or at least, it helps if we do.![]()
As far as the other marks on her head- make sure there's no sharp things poking out of your fake plant decor- for example, if they're the kind with coated wire stems (for shaping & sturdiness) they sometimes lose leaves & become a danger for a snake that runs into unshielded wires. That's the snake-equivalent of us stepping on a nail- something you want to prevent, because of the danger of infections.