Yes, it took me a while to work out how she could be related to Voldie as well as Black, but ho hum, got there in the end

Haha, thanks! Don't worry though, Fred and George are well sewn into the complicated weave of my tale. You'll see plenty of them.

Oh sugar, did I not mention? *looks back* No, it appears I did not. My bad, It's Sirius. Back to the tale!

Secret sniffled in Snape's embrace. Then, something struck her.
'Did, did you know about this? And never breathed a word?'
Snape seemed to freeze. 'Yes, I did. But I didn't want to hurt you. I wanted to protect you...'
'Did it ever occur maybe I wanted to know? I deserved, even, to know the truth about myself?! How much more of my life is a lie? Is my name even Secret, eh?' She pushed away from Snape, her grey eyes, which were staring to fill with tears, boring into his black ones.
'You're name is Secret, rest assured on that one.' said Snape firmly, grasping her wrists.
'No!' She pulled out of his hands. 'For eleven years, I have been living an illusion! Why did it take me coming here to find out?!'
'Secret, please sweetie...' he seemed to be almost pleading.
'Don't call me that.' she said in no more than a whisper, before turning round and storming off.
The bell rang over her head, but she ignored it, walking to the grassy area in front of the lake, where she sat heavily on the ground, looking over the clear glassy surface.
Hearing a cawing above her, she looked to see a crow circling her. It landed by her, where it hopped around on the spot, looking at her intently. What intrigued her was it's blue eyes. Most crows had brown eyes as far as she was aware.
'Hello. I'm Secret, Secret Snape.' Even though she may have had an argument, there was no way she was using her real name, and be associated with that murdered. She held her hand out, and it hopped onto her palm, and then her shoulder. 'Do you have a name?'
As the last words left her lips, a name swam to the front of her mind.
'Andy?' she said quietly. The crow seemed to nod, rubbing it's golden beak against her cheek. 'Is that your name? It's very nice.'
A low rumble of thunder suddenly rolled across the sky, and Secret looked up, terrified. She hadn't noticed the dark, ominous clouds, but now they were upon her. Rain began to pour upon her and, giving a cry, she jumped to her feet as a crack of lighting illuminated the sky. Looking between the castle and the pitch, she started to run towards the pitch, as it was nearer. Hiding under one of the faculty stands which they often sat in durning matches, she looked out onto the sheet of rain, whimpering softly as more thunder and lighting struck.
Suddenly, Andy, who had been clinging grimly to her shoulder, took off.
'No!' she cried, as the bird flew off into the storm. 'Please don't leave me!'
She looked out, and then curled up, her chin resting on her knee's, arms wrapped round her legs. She wanted Snape. She hadn't meant what she had said.
Playing with a lock of her red hair, she gave another strangled cry as lighting cracked the dark scene in front of her.
'Secret!'
She looked up at the sound of someone calling her name. As more lighting screamed in the sky, she felt arms scoop her up. She was carried in, her face hiding in this persons chest. As they carried her though the silent corridors, she finally looked up to see who it was.
'I'm sorry Daddy.' she whimpered.
'It's fine.' he soothed. 'Let's get you back to my office.'
He carried her into his office and deposited her onto the chair there. Looking through his cupboards, he pulled a small bottle out and gave it to Secret. She drank it, and felt the warm return to her body.
'Thank you. How, how did you even find me though?' she questioned.
'Your friend came and fetched me.' he said.
At this point, a familiar crow came and landed on her shoulder. Secret grinned, and stroked the top of Andy's head.
'Thank you.'
*

Soon, the exams were thrust open them. Two weeks of nothing but pressure took a toll on Secret, who became impatient and snappy until the twins finally persuaded her to take a Calming Draught off Snape.
Just after she had finished her last one, she spotted the trio in a flurry.
'What in hr name of Merlin is going on?' she asked, coming over.
'We think Snape knows how to get past Fluffy.' said Harry in an undertone.
Secret rolled her eyes; how long had they gone on about this?
'That was no stranger Hagrid met, it was Snape, which means he knows how to get past Fluffy.'
'And with Dumbledore gone...' began Hermione.
'Good afternoon.' said a silky voice. They spun to see Snape.
'Now, what would four young Gryffindor's such as yourselves being doing inside, on a day like this?' It was a simple question, but the way Snape said it, it could almost sound accusing.
Secret looked down at her scruffy shoes as Hermione started up 'We were just...'
'You ought to be careful.' Snape cut her off. 'People'll think you're...' he caught eye contact with Harry, who glared. '... up to something.'
He swept off, and Secret looked after his shrinking figure.
'Now what do we do?' asked hermione.
'We go down that trap-door. Tonight.' said Harry, as calmly as if he was stating his favourite Bertie Bott bean flavour.