Just curious does she ever pee by herself? Bloods hold their pee and poo in longer than any other snake I have ever owned. I'm talking maybe a month or two before using it. But when they do go you can smell it a mile away. All snakes have the white calcuim deposits when they pee. I am not sure if this is what your talking about though. I always thought Bloods should be kept in very high humidity and at 90 degrees on the hot spot until I became friends with Tracy Barker of VPI. She is the Blood Queen!!!! She told me to give them a hot spot no higher than 84 degrees since they have a very slow metabolism which made since to me since I kept Emeralds for years at 84 degrees and they never had any health problems. She told me people keep Bloods way too humid also and to just spray the cage down and just give them a nice soaking a few times a month for a hour or so in a rubbermaid. She also said your at more risk getting them sick keeping them too hot and too humid than a little cooler and a little less humid. Good luck with her.
And who can argue with a person that produce's animals like this every year?

Tim Rash