How do you do? I know your family, of course, but I don't expect it will help to compare. You might be descended from Caius Malfoy, but if you are you will likely know him as some venerable grey-haired portrait and not the titchy first-former he was when last I saw him. All the same, it's splendid to make your acquaintance. It seems rather a while since I was at Hogwarts, but yes, I'm Slytherin. Are you?
Will you tell me how you have been trying to contact your mother? I would like to help. I was able to get messages home before, so that they wouldn't presume I was dead, but now it'll seem that I have disappeared.