I would begin by just allowing the snake to get accustomed to my non-threatening presence by doing daily environment chores like changing the water bowl and just sort of having my fingers around. I would not stop the activity if she puffs up or hisses, since that will reinforce her behavior.

After this, I would just pick her up. If she bites then so be it. Don't put her back into her environment until she is calm with you (again, you don't want to reinforce the "I will bite you so you will put me down" behavior).

It is my feeling that your persistence and patience will pay off in the end. Just be calm and mellow so she'll pick up on that. I have also heard of some people putting in a small article of their clothing so that the snake will clue in to the scent. Never done it myself, but I have heard others doing it and they believe it has helped with "training".

Good luck!