Slytherin!
He laughed a bit and walked up to the great hall with her, "Oh, yeah, I forgot today is the first day of school. Now just take a seat at one of the tables and wait for the rest to come in."
She looked excited and sat down, took her book out and began to read it.
About an hour later a group of older kids came in and started mumbling, "Who's she?" Silveus started to get nervous and sat on the steps instead of the table bench. A few moments later Minerva came in with a group of kids behind her around the same age as Silveus. She looked up at Severus who nodded, then got up and joined them, not able to talk to anyone.
"Now as I call your name you will come forth, I will place the sorting hat on your head, and you will be sorted into your houses. Hermione Granger." Minerva called and a bushy haired girl came forward, sat on the stool, and got sorted into Gryffindor.
"Draco Malfoy." a blonde-whitish haired boy came forth, sat on the stool and right before the hat was set on his head, it called him into Slytherin. Once he was sorted, everyone on the far left table began to clap and cheer.
"Silveus Snape." she called and all the clapping ceased. Silveus looked up to Severus wide eyed before stepping forward, a little nervous, sat down and the hat screamed, "SLYTHERIN!" she sighed in relief and went to go sit at the table.