Ch. 1
Buffy startled slightly when the large brown owl flew into her window. Collecting herself, she untied the parchment from the beautiful bird's leg before reading the letter. Confirming that the bird was to wait for a reply, she hurried to the library where she found her step-father and daughter pouring over some obscure text.
"Giles, tell me what you think of this?" She asked, handing him the missive. While her watcher turned step-father read, she went looking for her two sisters. Faith, though not her blood sister was her sister slayer in that she was called after Buffy's momentary death by the Master as well as her adopted sister as her mother and Giles had 'adopted' her, and Kendra her half-sister were both easily found training the minis. Spike was a bit more difficult to locate, however eventually she did and they headed back to the library she'd left Giles in.
"Well Buffy it's obvious this Headmaster Dumbledore doesn't know who you are." Giles said, taking off his glasses to clean. Buffy nodded, most people didn't know who she was. Her family was the exception, not even Willow and Xander knew the truth about her. She wasn't just the longest lived Slayer, she was also a witch.
"What's going on B?" Faith asked.
"Fay, Ken, you remember when mom told us about the special school she went to, well one of her teachers has been promoted to headmaster and he's worried about a supposed big bad that's been plaguing their community for some time so he's offering me a teaching position as well as to anyone I might wish to bring with me." Buffy said, speaking slightly in code as she'd not cast privacy spells.
"Are you going to take it?" Kendra asked.
"I'm not sure because on one hand this Dumbledore obviously doesn't know who I am, on the other I'd love for Dawn to get the actual education we didn't get." Buffy said looking at her sisters. All three sisters had magic, Buffy got hers from both her parents, while Kendra got her from their mother as her father was what they'd been told was called a muggle in the wizarding world. Faith, they weren't sure since she wasn't technically related to them but her mother had discovered she had magic just the same.
"I think you should go." Giles said. Buffy searched her father's eyes, then the eyes of her sisters before nodding.
"Are any of you coming with me?" Buffy asked.
"B, you ain't leaving without me." Faith said. When both Kendra and Giles nodded as well she excused herself to reply to Professor Dumbledore.
About a week later, Buffy received Dawn's invitation to join her peers at Hogwarts School of Witchcraft and Wizardry as well as the third year supply list. A couple of days after that, Giles went to Diagon Ally as Buffy couldn't access her family's money without revealing her heritage.
When September 1 rolled around, Buffy, her step-father, her sisters and her daughter went to Platform 9 ¾ to send Dawn off on the train. Then port keyed to the school where Dumbledore met them at the gate. He chatted amicably until they made it to the staff room where they were quickly introduced to the rest of the staff. This all went well until Dumbledore tried to introduce her to his potions professor who struck her as very familiar.
"Severus." She breathed in shock.
"Buffy." He relied quietly.
"You two know each other?" Dumbledore asked, eyes twinkling.
"Yes." Both she and Severus replied at the same time. She looked at the man she'd not seen in thirteen years and smirked. The man would be getting the shock of his life tonight. Thankfully before anybody could question this association any further, it was time for the teachers to head to the great hall. Buffy watched as her daughter talked animatedly to who Buffy had to assume was her cousin as they stood in the line to be sorted. She listened as the a boy called Neville Longbottom was sorted to Hufflepuff, as Draco Malfoy was put in Slytherin, and as the famous Harry Potter was sorted to Gryffindor. Hearing the professor that had been introduced to her as Minerva McGonagall near her daughter's spot in the alphabetical list, she watched as the stern Scottish woman's eyes went comically wide before she called,
"Snape, Dawnella" She snickered at the reactions from both the teachers and the student body. She watched the potions professor out of the corner of her eye as she watched her daughter sit on the stool, and the hat call out Ravenclaw after barely a few seconds after the hat was placed on her head. Finally she tuned out as the last of the first years were sorted and the Headmaster started his speech.
As she was leaving the great hall after the feast is when Severus finally caught up to her. Finding a nearby alcove, she put up the necessary privacy charms before turning to face the clearly irate father of her daughter.
"Buffy, why didn't you tell me I had a daughter." Snape hissed.
"Sev, don't start with me." She said in a tone that made most of the demonic community quake, "I tried to find you but it's not like you're listed in the phonebook, nor did you leave me any way to contact you." With that, she broke the ward and headed toward the rooms Dumbledore had showed her.
The next month or so of classes flew by in a blur. The classes she taught were easy enough since she had been raised muggle, even if she did have some trouble getting one blond 'pureblood' and his followers to participate. She bickered with her daughter's father, kept up with the gossip mill through her daughter and tried to figure out who exactly was setting off her spidey sense. Then came Halloween, about halfway through the he Defense Against the Dark Arts professor came running in to the great hall yelling about a troll in the dungeons before fainting. Buffy rolled her eyes both at the incompetent professor who given his specialty should be fighting the troll not fainting and at the Headmaster who tried to send the Slytherins to their dorm despite that being where the threat was. She slipped out of the great hall and headed toward the dungeons though she didn't quite make it there as she noticed the troll headed toward the girls loo.