hopefully it'll make more sense now
Enjoy
Sarah

“Sirius Black?” Dezi echoed, unable to believe what she was hearing. It seemed crazy that such a thing would happen; she did know Dumbledore was ‘odd’ at times, but he was almost always right.
“Yes, you are correct. In his sixth year, he took Remus’ dear time-turner, put it around his neck, and twisted the knob many times over. He disappeared, only to appear here. An infamous troublemaker when with James... he’s still getting in trouble now from what I have heard.”
“Why are you telling me this?”
“Because I recall in Sirius’ final year, he was not a trouble maker, almost never getting into any form of trouble actually, and if he did it was not his fault. Of course I knew why, he met a girl. A girl much like himself, and he became attached to her, loved her dearly. They showed each other something about themselves. Considering you are the only one that...”
“How are Sirius and I alike?” Dezi asked flatly, cutting off Dumbledore
“’True’ pureblood families, sorted into a house that they ‘don’t belong’. As you know, Sirius is in Gryffindor, yet he is of Black origin. You are a Malfoy, yet you are in Gryffindor as well...”
“If my mother wasn’t...”
“Indeed, it was your mother, Hermione Granger,” Dumbledore cut her off. “I am aware you have had dreams of your your biological parents. Am I correct?”
How can he know this yet I haven’t told anyone...?
“Occlumecy, dear girl. I might not be as... lively as I once was, but I still have fair share of gifts and curses. I am also aware you have not been well.”
“Like when I was used as the Slytherins’ practice target?”
“Not as you may think, but more so how you have been treating your family.”
“They aren’t family,” Dezi pouted as she sunk lower into her seat.
“But they took you under their watch when you had no one left. When your father wasn’t around, who looked after you?”
“My ‘mum’ Ginny.”
“And?”
Dezi scowled and didn’t respond.
“Harry, that is correct. He was a great help from what I heard, and even if he is not your true father, you still contain his stubbornness.”
Dezi’s mouth dropped, but she couldn’t complain, she was well aware it was true enough. Dumbledore merely smiled weakly.
“But you didn’t answer my question of why I need to know this,” she pointed out, trying to change the subject.
“You are the girl that changed Sirius in his final year.”
Dezi’s eyes widened.
“Uh...”
“Harry will become aware of this, I have told your current headmaster Professor Boissoneault. You are to bring Sirius to Grimmauld Place, despite his complaints. He doesn’t know that you are aware of his true being, but he will find out. He cannot be left in Hogwarts for Christmas, he is still not trusted enough. He used to stay with James, but since he cannot do so this year, he must go with you. Just make sure he doesn’t figure out Harry is James’ son, he has found out many things he shouldn’t know already, it would ruin him even more if he found out such others.”
“But what about Grimmauld Place? If he found out that was used as the Headquarters back in the day...”
“But he won’t, he will just learn there are other residents in his old house.”
“But...”
“Do I make myself clear?”
“Yes,” Dezi squeaked.
“Do you have any other questions you wish to have answered?”
“Yes,” Dezi responded. “If Sirius used a time-turner to get here, why didn’t he go back a long while ago when he had the chance?”
“He broke it when landing on the floor of the castle upon arriving here. Is there anything else?”
“Why didn’t he get another?” she asked immediately.
“This is his... punishment, par say, for stealing his friend’s Time-Turner.”
“How is it his punishment to stay here?”
“He hasn’t any friends, other than you of course. I also knew what was to come, and it is... very important that he should stay for his 6th year here in the ‘future’.”
Dezi was silent.
“Is that all?” Dumbledore asked quietly.
Dezi shrugged.
“Then we are finished.”
Dezi put the chair back where she had found it, silently leaving the room. She was still trying to grasp everything she was told.