Farfarello was so tempted to slap River, to see if that would make her make sense, but fortunately he decided against it, in the end. Type O. That was a good start, but... "O+ or O-, River?" He was not yelling at her, really, he was just asking somewhat loudly. The odds were very good that she was, indeed, O+ as that was typically the most common blood type in caucasians, with O- (and every RH- blood type, for that matter) being quite rare, but if at all possible Farfarello would rather be sure than have to play the odds.

"Stay AWAKE, River. No going to sleep. You know that. What dreams may come, must give you pause, right?" He skipped the middle of that quote, not wanting to say the part about shuffling off the mortal coil because that seemed like inviting bad luck. Still, he'd say almost anything to keep River from letting go and sliding into unconsciousness; Schuldig would be impossible to deal with if River died.