I don't think Mary did it. I don't think Bloody, his other persona (hints we have) did it ...

But Mary is the only vampire with red hair..(〜￣△￣)〜

Maybe Mary came after some other person had come and already killed maria's dad...

Exactly. That's my thoughts. He came in while it was happening and probably tried to help. Or maybe Mary was the original target and Isaac's son got in the way?

I just don't think Mary did it. He's intrinsically good. He helps people, he doesn't like being a vampire, and he's not much of a blood drinker compelled to target people.

Like Mary's father?

I also think that

I dont think that his father.....But i do believe that mary has another personality in him....You the one with the real vampire personality....

I think that he killed Yuusei when the real vampire side was controlling him,right?

That can be cause i definitely believe that this current mary could have not killed mary.....But it could have been the mary with the vampire personality.

could not have killed yuusei*

Yeah.. （￣へ￣）

Ur rite. There's a guy called "Mary" in him. That's why the short female vampire told bloody to say "I love you" to the Mary in him. And maybe that's why Bloody hates being called Mary bc of the bad killer vamp Mary. And hear I thought it was bc it was a woman's name lol, Maria also has a woman's name. And they all with long hair so confusing lmao

I thought she said 'Bloody' not 'Mary'?

Btw, Maria is another way of saying Mary. They mean the same thing. http://www.behindthename.com/name/mary

'The meaning is not known for certain, but there are several theories including "sea of bitterness", "rebelliousness", and "wished for child". However it was most likely originally an Egyptian name, perhaps derived in part from mry "beloved" or mr "love".'

Bloody Mary is both an alcoholic drink, https://en.wikipedia.org/wiki/Bloody_Mary_%28cocktail%29, and also an urban legend, https://en.wikipedia.org/wiki/Bloody_Mary_%28folklore%29.