Here is something I do, as it was suggested to me, and I believe it works... but it's only my opinion... Get yourself a bottle of hand sanitizer and keep it on your rack. EVERY TIME before you open her enclosure, use the hand sanitizer on your hands. Let the snake get used to this scent. In time, the snake should connect that scent with "no threat" and "not food".
It may not help, but may be worth a shot.
Best of luck!!