This is just some information about the past 11 years, I have just done Bella's part because everyone already knows about Harry's, and if you don't…well why are you reading this story?. Anyway so this is just a sort of filler, so it's quite short, the other chapters will be longer.
Chapter 1 – Beginning
Third person
"You said you would protect her!" Severus Snape sobbed out.
"Lily and James put their faith in the wrong people, rather much like yourself" replied Albus Dumbledore.
Snape just continued sobbing.
"The children survived Severus"
"They do not need protecting the Dark Lord is gone"
"Yes, but he can and will return" Snape just looked at him blankly
"It is mainly Harry that will need protection; after all the prophecy only mentioned a boy, but alas Isabella survived as well so Voldermort will want to, how do you say… take care of her as well"
Snape stilled looked unconvinced.
"Severus if you truly loved Lily you would do this for her. Isabella looks extremely like her, her double, and Harry has her eyes. Lily lives on in her children"
"Know one…know one must know"
"Of course I would never reveal the best of you"
Severus turned to leave.
"One moment Severus" he turned back
"The children were to go to the guardianship of Sirius Black."
Snape tensed at the name, but remained silent.
"However, as Sirius Black is currently in Azkaban we had to turn to making our own decisions, Harry for extra protection will go to his only remaining relatives, Isabella however is in less danger…"
All was silent
"I think you should look after Isabella, Severus"
~Its Magic~
11 years have passed since that tragic day and Isabella Lilly Potter has turned into a beautiful young lady, Dumbledore was right, Isabella was the "spitting image of her mother" as she was constantly told.
Severus loved Bella like his own, although he had his doubts at first he will never regret taking Bella in, he is finally happy.
After Bella turned 1, Severus decided that were he lived was not a suitable place to raise a child, so he moved to Ottery St. Catchpole in Devon. It was close to some other wizard family's such as the Weasley's, the Diggory's, the Lovegood's and it wasn't to far from the Malfoy's. Which Severus made sure to visit regularly, he did not like the fact that Isabella was mixing with "blood traitors" (Hey he's still Snape) although Bella doesn't like it much there, she say's the people there are "Scary, bad people" she was and still is very intuitive, just like her mother, however she doesn't mind Draco that much anymore she didn't at first though. She unfortunately gets on very well with that Weasley boy (Ron) and gets on very well with that Diggory boy (Cedric) and most unfortunately loves that Lovegood Girl (Luna), Severus has tried very hard to stop Bella playing with old Xenophilius girl, but Bella is very stubborn, again like her mother
Bella also started to get very curious about her parents, at the age of 5 Bella came home crying one day
Flashback
"Isabella, what is a matter?" Snape said with a concerned look.
"Ron said you aren't my daddy, he said my mummy and daddy are dead because a very bad man murdered them and he tried to murder me and my brother too! I don't even have a brother do I Sev? Not like Ron, who has Freddie and Georgie and Ginny and..."
"Isabella, it time I told you something"
End of Flashback
Since that day Bella has had tantrum after tantrum about visiting her brother, it tears Snape apart not being able to give Bella what she wants but Dumbledore has been very strict about Harry staying where he is and Bella, as spoilt as she may be, knows that Dumbledore is always right.
Bella loves hearing about her Parents and Harry, Snape can endlessly talk about her mother but she has to find out about her father though Dumbledore, McGonagall or Hagrid.
She was livid to hear that know one could tell her about Harry though
Flashback
Bella (age 7) is at the Weasley's talking to Hagrid about her parents again, at present she is at the table with Ron eating Bertie Botts Every Flavour Beans
"…Although I think Fred and George could've give them a run for their money, inseparable their where James and Sirius!"
"So where is Sirius know, how comes I've never met him?"
Hagrid shifted uncomfortably and quickly changed the subject
"I think Harry is probably the Spitting image of your dad, he sure enough…"
"What do you mean you think he might be? Surely you've seen him enough recently to know?"
Hagrid shifted awkwardly again.
"Well I haven't seen him since that night Bell"
"Well that someone else surely would have told you what he looks like, especially if it is like my dad because everyone comments on how much I look like my mum"
"Er, well you see no ones since him since…"
"WHAT!"
Bella shouted loud enough to make both Ron and Hagrid jump which also made the chair Hagrid was on break, which of course made the whole family come to see what had happened
"WHAT DO YOU MEAN? KNOW ONE HAS EVEN GONE TO CHECK ON HIM, EVEN ONCE? WHAT ABOUT IF HE IS UNHAPPY, OR BEING BULLIED? HOW CAN YOU NOT CHECK TO SEE IF HE IS OKAY?"
In the end everyone other than Hagrid and Mr and Mrs Weasley quickly evacuated the room, and Severus had to come and collect Bella because she was in such a state
End of Flashback
Bella is so excited to finally meet Harry, it has been decided that Bella may accompany Hagrid to collect Harry so he can learn about Hogwarts and buy his things, Bella was already excited about attending Hogwarts, she has been since Bill Weasley got his letter, but the fact that Harry will be going just makes it all the better.