I'm glad that at least he didn't "connect" with anyone. Hungry snakes have been known to forget their manners- & since he missed, I assume your hand & her face were far enough away that he wasn't identifying either of you very well- most likely going for the "warm & wiggling" potential prey. Were you holding him when he tried for your hand? I assume not, or he'd have caught you, so I'm assuming he didn't have the advantage of your (or her) scent & touch, just played a couple bad hunches. Silly little snek! It's far more concerning when they have all the right cues (scent & touch) & bite anyway. Honest mistakes are easily forgivable.