"Magic has a cost," Jason answers, his voice emotionless. "To see your mother's fate and her killer, I will need a few drops of your blood."

He is already picking up the needle for his own contribution, holding it to his own finger, ready to prick himself unless she shows signs of hesitating.

Jason Blood doesn't really do 'nervous'; but... apprehensive, perhaps. Etrigan's gleeful whispers have already given him the hint that whatever truth lies waiting is an ugly one.

He may not believe that children should be coddled, but neither does he take any pleasure in actively causing them pain.

"If you do not find this acceptable, I will not fault you for leaving."

It's the closest thing to an escape route he can offer.