i'm not sure about the blood, I will let someone with more knowledge tackle that one.

it appears she could be about to shed again. You need a digital thermometer to measure the humidity. Ambient humidity should be around 50%, and when in shed you can mist (yes it's ok, but don't soak her!) to bump the humidity up 60-70%

Wal-mart sells Accurite thermometers for around 11 dollars...they're cheap and a lot of people recommend them.

Can you please tell us how you're set up currently is? What are you using to heat with? If you're using a heat rock, then chances are your snake has been burned. You have got to find an alternate method of heating. There are plenty of methods and we're more than happy to guide you through the steps.