That's an awesome piece, I don't think i've ever seen it before. Alucard looks like he's about to kill him. This could perhaps be a stylistic depiction of how you get the bad ending in Symphony. or maybe this could've been a scene from the alucardvania....
I wonder if this was in Santa Lilio Sangre? I must've overlooked it, cuz there are plenty of great illustrations she has in there.