A/N: I'm a terrible person and I'm so sorry and if you're still following this you're wonderful. I've been incredibly busy the last few months having set up a craft business, having a wedding fair to prepare for plus having a part time job on top of that so have barely been on my laptop lately. I had this chapter written already and it's not particularly long I'm afraid but I needed it in there to introduce Rosa's relationship with the other Marauders. I hope you like the chapter and I am in the process of writing the next one and will have it up as soon as I can. Much love to you all and enjoy!

Chapter 3

"Rosa, you're the Potions genius, what does this mean?" Sirius moaned, pointing at a paragraph in his potions book.

Sirius and I had been friends for a few months now and for some unknown reason he had decided to follow me to the library to do his homework. It was a wonder he even knew where the library was if you asked me, but here he was, apparently struggling to complete a simple essay.

"I'm going to ask you again, who are you and what have you done with Sirius Black?" I looked at him suspiciously, putting my quill down and frowning.

He looked a little uncomfortable at this point and sighed before looking over at me and putting his own quill down.

"I hate to admit this, so you'd better not tell a soul. But McGonagall basically won't let me play in the next Quidditch match unless I start handing in my homework," he looked quite put out by that fact and rolled his eyes in obvious annoyance.

"Wait, so why am I supposed to be helping you? Considering I'm playing against you that would be to my benefit," I grinned at the dark haired Gryffindor.

"Well so far you haven't helped me, but feel free to do so, would be awfully nice of you," he grinned at me now.

"Nah, I think I'll watch you suffer, much more fun for me," I grinned back, picking my quill back up and continued writing my essay.

"That's not very nice," he pouted, before grinning again and going back to his essay also.

I was almost finished writing up my potions essay when we were interrupted rather more loudly than was strictly allowed in the library by none other than the Marauders. James pulled a chair up next to Sirius and sat on it backwards, while Remus took a seat next to me and gave me a small smile. Peter meanwhile hovered in an uncomfortable fashion next to James.

"Are you nearly done with that stupid homework mate? Can't believe McGonagall won't let you play til you've done it all, shouldn't be allowed. We have pranks to plan and Slytherins to put in their place," James said to Sirius, earning him a glare from the librarian.

"We can't do anything until we know the password into the Slytherin common room, there's no other way for us to get in there and we have everything else prepared," Sirius whispered, looking up at his best friend before continuing to scribble on his parchment.

"Oh that's easy, their current password is Pygmy Puff. Although it changes tomorrow to Fluffy Unicorn," I grinned, putting my quill down as I had just finished my essay.

"This is the Slytherin common room we're talking about, not Hufflepuff," James looked at me with an amused expression on his face.

"I know, at the beginning of term I charmed their entrance so the passwords were set with stupid names like those for the rest of the year and they still haven't figured out how to change them back," I grinned smugly, feeling quite pleased with myself.

"That is impressive. How did you manage that?" James said, awe in his voice as he and his fellow marauders grinned at me.

"I can't go giving away my secrets now can I. Be thankful I even told you the password, it would have taken you forever to figure it out," I answered with a smirk, leaning back in my chair.

"Sirius, I'm a little disappointed you didn't tell us your friend was a genius Ravenclaw prankster," James gave Sirius a look, folding his arms across his chest.

"If I'd known, I would have told you mate. Apparently someone's been keeping it quiet, I only knew she was an animagus," Sirius answered, raising his eyebrow at me.

"Sirius! You weren't supposed to tell anyone that!" I glared at him, glancing around to make sure no-one else had heard.

"You know about us being animagus, it's only fair," Sirius grinned back, unfazed.

"Wait, she knows we're animagus?" James frowned, looking at Sirius.

"Of course I know you're animagus, you're not exactly subtle about it, plus I've seen you in the forest keeping Remus company on the full moon," I answered, rolling my eyes at him.

"Wait you know about Remus?" It was Sirius' turn to frown.

"Of course I do, I make it my job to find out everything I can about guys that Elody likes and she had a thing for him in third year. Plus it's not particularly difficult to figure out, I'm pretty sure most of the Ravenclaw 6th years figured it out in first year," I replied casually, I didn't understand Sirius' reaction.

"Elody's the flirty one who's always attached to your hip right?" Sirius' eyes had lit up and I had an idea of where he was going with this.

"Yep that's her," I grinned back at him.

"Interesting," was all he said back, giving me a conspiratorial look.

"You were exaggerating about the Ravenclaw sixth years weren't you?" Remus looked slightly worried and seemed to have missed mine and Sirius' exchange altogether.

"Well there are at least a few who know, but you don't have to worry about it, I heard some of them saying it made you mysteriously sexy, so if anything it could work in your favour," I grinned at the Gryffindor prefect.

"Remus got called mysteriously sexy? But that's my job," Sirius acted indignant, huffing in a child-like way.

"And you're not bothered by it?" Remus still seemed a little uneasy and was chewing his lip.

"Of course not! It's not as if you chose it. And I mean look at Hagrid, he's half giant and he's about as harmless as a butterfly. You just have to choose to not let it define you," I told Remus, giving him a genuine smile.

He stilled looked a little uncomfortable, but said nothing else on the matter.

"Well I have Quidditch practise to be getting to, so I'll leave you to your plotting," I picked up my bag and stood up to leave.

"Oh and Sirius?" I tried to hide my smirk as I turned back to him.

"Yes?" he answered with a suspicious look.

"You might want to turn back to the page on felix felicis, you know, the potion we're supposed to be writing our essays on? You've spent the last half an hour reading about love potions," I couldn't help laughing a little as I turned away from his disgruntled face and left the library.