wrong category again.
k what do you mean by 'a real vampire' because blood sucking dracula's aren't real. psi vampires are, astrally speaking i'm told they are as well, and fine, sanguine vampires are too.
vampires aren't really forced into preforming one type of thing. think of all the stories you've ever heard about someone rebelling against 'tradition', nothings set in stone. if you want to practice 'white' magic you can. meditate on the question if you feel badly, the answer should come to you, but trust me, you just do what feels right, not what others say you must.
also, side note, i know what you mean by 'white' and 'black' magic, but magic has no colour. i'm guessing you're labeling things thusly to make it easier, because i hope your mom has explained that to you.