If I were you, I'd leave her alone for a day or so. It's probably not going to do the whole job, but it might help. Alot of BCC that hiss, do it because they feel threatened. If she's hissing and then striking (after a much recommended couple of days alone) I'd suggest placing her on the floor and sitting or laying down beside her (not close enough to be bitten in the face, mind you). If you present yourself on a level above the snake, it will scare her. If you are on more of a common level, she'll feel more secure. At this point, wearing gloves if need be, gently brush her sides and be gentle. If/when she does bite you, DO NOT pull away! By not giving in, she will realize that biting doesn't work. Eventually, if you work with her enough, she will become accustomed to you. Some snakes are more stubborn than other...Peruvians being high up on that list. Good Luck.
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0.2 Burms
4.6 Rats~Rex, Winkin', Kanga, Noodle, Cy, Pyp, Symone, Vyolet, Onyx, Blinkin'
1.1 Dogs~Boots, Karrey
"She's got beauty, brains...and a set of pipes"