Bianca was indeed the crossbow. Polished hardwood with gold fittings and inlay and carefully crafted silver plated steel arms. Bianca was his baby, and he'd been delighted when he'd found her after he started having dreams.
He walked back into the house. Bianca was in a closed state, and with a flick of his wrist she opened up for him, a deadly looking blade popping from the front. There was probably a sexual joke in there somewhere.
"Bianca, Helen. Helen, Bianca. Bianca is pleased to meet you."