Rascal-I don't know about the dyed hair, but I'm fairly certain those are freckles, not blood pooling.
As far as presence of fibers or animal hair, I don't recall we've been given that information. We discussed whether or not animal hairs were found on her a few pages back, because some of us believe she may have worked in agriculture or rode horses. Nothing like that has been published anywhere that we could find at the time. We figured if she rode horses, for example, there should be horse hair on at least one of her garments, but so far, it hasn't been mentioned.
The only results we have are her pollen results and limited isotopes, as they only did hair and nails, and not teeth and bone, which would have been more far reaching into her past. Hope this helps.