Not that I have the least bit of experience with seriously snappy snakes in large colonies....but a couple of thoughts come to mind:

1. Make sure whatever tub she's in is at a level that is the safest for you to look and reach into...not too high and not too low. Which you've probably already figured out. LOL

The other thing, 2. Maybe you could pre-kill the rats so they don't get so beat up by the psycho-snake? Might just come down to a choice of which is most difficult for you to endure.

She sounds like a very interesting animal. Does she make up in looks what she lacks in docility?