I agree with all of the things already mentioned, and will add that she is still small enough for you to use a humid hide if you cannot get her humidity up enough. Just take a plastic rubbermaid container (or sometimes you can get the really big gladware ones) that is a good size for her to curl up in, cut a hole in the side for her to go through, and put some damp sphagnum moss in there. Eventually you are going to want plastic caging, which will make things so much easier. If you can get your humidity stabilized at 65-70% you should be fine..this seems to be where most of my bloods like it.
BTW, that's a nice looking snake..a pretty lucky grab for a rescue.