Turn Back Time (Potterlock)

Blood is thicker

Snape snorted, and turned away.

"What you think may have heard, you were wrong." Lupin said, and it took me a moment to realise that that he was talking to us.

Sherlock and I walked out from our hiding place.
I looked at the man in front of us.
"Wolfsbane. That's the potion you need Snape to make?" I asked.

Lupin looked scared, but just nodded. "You have no reason to trust me now, do you Henrietta?"

I smiled. I liked Lupin. "Yes I do."

"What?" he asked, taking a cautionary glance out of the window. We had half an hour before the moon rose.

"You're using wolfsbane. And we have half an hour, so I'll have time to make it." I said, already making my way to the dungeons, Sherlock in tow.

"You know how to make it?" Lupin asked, running to catch up with us.

"Yeah, I've known a few werewolves in my time." I said.

"Who?" Lupin asked.

"Friends." I said shortly.

We walked into the potions room, and I started setting everything up. I listed the ingredients I needed, and Lupin fetched them, trying to learn along the way.
I worked quickly, and just in time. I had just finished when Lupin's back started stretching, and you could hear the bones move.

"Quick! Drink!" I said, shoving the cup into his hand, which was already growing claws. I turned away, shielding Sherlock.

Redbeard suddenly barked, and another animal whimpered.

"We did it." I muttered, levitating the wolf, and walking to the door.

But Snape got there first.
"Holmes! What are you doing in my classroom?!" he roared.

"We, er, had to help a Professor." I said, gesturing to the wolf in mid air.

Snape saw the cup on the ground, in pieces, and the rest of the potion still smoking slightly.

"Get out." He growled. "I will not punish you, yet, because you seem to have brewed a successful potion for once. Now go! I will take it from here."

We scuttled. Snape levitated Lupin, and sent him up to the DADA office.

I let out a breath I hadn't realised I had been holding as soon as we were in the Ravenclaw common room.

"That was close." I muttered.

"How close?" Sherlock asked.

"he was already changing, merging." I said, shuddering at the danger that could have been.

"Well, we're fine, and so is the whole castle, now." Sherlock said, knowing what I was thinking.

"Great." I said absently. "I'm going up to bed."

"No, you're going to write a letter, aren't you. To Alabaster and Woody." Sherlock said.

"You know me too well." I said. "But I'm going to go to bed too."

Alabaster. My mother's only other surviving demigod child. He was 18, and had fought in the war for Kronos. They had lost, and all of our siblings had died for the cause.
And Woody was the wolf who had befriended us when we were on the run once. He could turn into a human at will, and was the last of his kind. (A/N This is a shout out to the Wolven books, they're really good, go read! But Woody is a character from those, so I just thought I'd point that out.)

My letter to them was short, and in Greek. It told them of my father's escape, Sherlock's relationship, and the werewolf episode.
I attached it to the leg of my pitch black owl, Howl, and told him where to take it.
I then lay down, and entered my mind palace.