everytime your snake get snippy or hissing or takes an agressive stance pick her up (don't worry about getting tagged it's not really that bad anyways ) and pack her into a ball in your hands. keep kind of packing her gently around with your hands firmly class on the top and the bottom.do this for a couple of minutes totally chills them out. after you've done this you will find you can handle your snake without any worries . doing this takes them out of fight mode and puts them into hide mode. keep doing this every time you go to put your hand in there and it acts aggressively. do this a couple of times and I guarantee you'll see a difference. there's a video on this on youtube .