*** Apologises if the Horcruxes info isn't right, I did research into it and there was some conflicting information, but hopefully, it's ok ***
On the way back to the castle Mia was nervous, she was debating with herself if she should tell them or if she should just keep it to herself, she thought back to what Professor Dumbledore had told her about how she should keep as much detail as possible to herself but he understood if she told someone she trusted.
James could tell Mia was worried which in turn made him worried, what was this news she was going to tell them? Reaching the castle he took her hand and headed inside, fate must have been on their side as they spotted Lily with Remus "Hey Lily, Mia needs you… Well us"
Lily looked at James then at Mia, something felt wrong, she turned to Remus and gave a small smile "I'll come to find you when we're done" She told him leaning up and kissing him quickly on the lips before he could react.
James stifled a laugh as Remus's face slowly went red "Come on, I know where to go" He told Mia and Lily and led the way to the room of requirement hurrying them both inside before anyone else could see "Alright Mia… What is it you need to tell us?" He couldn't wait any longer, curiosity was getting the better of him.
Mia bit her lip looking before the two "Ok… This isn't going to be easy to hear, but I need both of you to let me finish" She paused and took a deep breath "My name is Hermione Granger and I am from the year 1998" she started and watched as their eyes widen "I was sent here by Professor McGonagall because Voldemort had attacked Hogwarts and had killed half the student and auror population… He was winning, I was about to be cursed when everything started spinning and I ended up here"
Mia stopped talking for a moment to breathe "In the future, you are both dead, you both died protecting your son from Voldemort, his name was Harry James Potter and he was my best friend" She could feel a tear running down her face as she spoke "There was a prophecy, Harry told me about it, someone who was born at the end of July, whose parents had defied Voldemort three times, neither can live while the other survives" she gives them a just a brief snippet of what Harry had told her
"I don't know if Harry would have won, but the death toll was massive. Me coming here has prevented the two of you from coming together. I can't return back to my time, but I can't live with this over my head, I… I just needed to tell you both the truth, whatever you decide I will support it. I will give you guys some time to talk and then I will answer any of your questions that I can" she said before turning and walking out of the room and sliding down the wall of the corridor.
James turned to Lily as Mia… Hermione walked out of the room "I… I don't even know what to say" He said and rubbed the back of his head, it was a lot to process but there was something he was certain of "Lily, what Mia's just said about what could have been our future… Getting married and having a kid, I don't want that" He said "You're great and everything and if Mia hadn't have arrived then I would probably be grinning at the idea of that future but everything changed now" He said looking at her.
Lily nodded "Oh don't worry, I don't want that future either, I have no idea how we ended up together but I have liked Remus for so long and to finally have a chance with him is amazing. I know you don't love me James and I don't love you, I'm not going to mourn over something I have never had to begin with" she told him "If anything I think its Mia who will miss it, she must have been struggling with the idea of liking you but knowing she will never have that friend she loves so much"
James nods, Lily is right this is harder for Mia than the two of them, turning he walked out the door and looked down at Mia on the floor, her eyes puffy from crying. Without a moment he knelt down and pulled her into a hug, the quiet sob she released made him hold her tighter for a moment before lifting her chin and wiping away the tears on her face "Please let go of this guilt you are feeling, none of this is your fault" He said softly before standing and pulling her to her feet and led her back into the room.
Lily immediately ran over hugging her friend fiercely "I'm so sorry you lost your best friend, but you have given me the best gift possible, you have let me have a chance of being with Remus… I have been in love with him for such a long time and he completes me in every way" She tells her and released her from the hug "I truly believe you were sent here not only to save the future but to save us too" she said and smiled towards James "I'm going to let you two talk, I think we all know that we can't repeat anything discussed in this room but we can talk later Mia" placing a small kiss on Mia's cheek before walking out of the room.
James took Mia's hand again and led her over to the sofa sitting down and pulling her into an embrace "Mia I need you to know that you are the one I want to be with, I meant every word I said when we were at The Three Broomsticks and what you have said doesn't change how I feel" He said softly "If anything, I hate what you had to go through, I can't imagine coping with watching my friends and people who I'd grown up with dying around me, you are such an amazingly incredible strong woman and I hope that you will let me learn more about you"
Mia lifted her head off his chest "I know right now you say you don't want that future with Lily but you might change your mind, you might" she doesn't get to finish what she is saying as James interrupts kissing her while pulling her onto his lap.
After a moment he stops and presses his forehead against hers "I am not going to change my mind Mia, the only future I am thinking about is spending as much time with you and my friends as I can before school ends and we have figure out how we are going to defeat him" he said.
Mia's smiles and strokes his cheek softly "Good, as selfish as it makes me I just want to be with you, taking each day as it comes um… Hold on wait! I know how to defeat him! Why didn't I think about this before when I was speaking to Professor Dumbledore! I know what the current Horcruxes are and I know how to destroy them!" She said grinning jumping off his lap.
James stood up "Hold up Mia… What are Horcruxes and what are they to do with killing him?" He asked the confusion showing on his face "Are you saying we really have a chance to stop him? Before whatever happens in your future finds a way to still happen?" He said starring at her.
"Yes!" She said still grinning "So a Horcrux is when you are separating part of your soul, a fragment so to speak to get immortality unless the Horcrux is destroyed the creator is essentially immortal" She said and started pacing "However at this time in history he hasn't created them all. I'm not sure if his first was when he killed Moaning Myrtle, which is his diary, or his family ring but I know he Helga Hufflepuff's cup after those two. I don't know if has had a chance to create one of Rowena Ravenclaw's diadem… That's a tiara and Salazar Slytherin's locket"
James continued to watch her but ginned at what this could mean for them all "How does he create them? I mean if it's easy why not more?" He askes
Mia stopped pacing "He did create more, he later makes another, his snake Nagini so including the part he still has within himself that's 7 parts of his soul, no one has fragmented their soul so many times before. But he doesn't know that I'm here, he doesn't know that I know this information… James don't you see! We can do this, we can end him" She said excitedly.
James pulls her closer "Do you see now, you being here is fate, you are what's going to help us win this war" He smiled "You weren't sent here to stop the future changing, you were sent to change it, to make it better, you're are our saviour Mia" He said and kissed her.