All right… here's the scoop. I don't know exactly what JK has in mind, but for the sake of this particular fan fiction, this is the history of Severus Snape: He started teaching at Hogwarts when he was 20. Elizabeth's first year was his second year teaching.
After the following chapter I have absolutely no idea where I'm going to go with this story, so if you have any ideas please let me know. Thanks! And happy reading!!!
A Letter From Hogwarts
Dear Ms Sullivan,
I hope that this letter finds you well. It has been far too long since I've last heard news from you. I myself have been quite splendid. Another year at Hogwarts has come and gone and it will soon be time for a fresh term.
Before another school year can get underway I would like to invite you back to Hogwarts School of Witchcraft and Wizardry. On August 21st you and each of your fellow graduates will be invited to attend the Hogwarts Ten Year Class Reunion.
A private room will be provided for you as will each of your meals. You are more than welcome to bring a guest along with you.
Please respond by owl post by August 18th. I, along with the professors and staff at Hogwarts look forward to seeing you this summer.
Yours truly,
Albus Dumbledore
Headmaster