You're Petunia! But in this au you are new

It is your first day in your new high school. You were feeling anxious and didn't know how people would look at you. You stepped inside and you were feeling even more anxious, your past highschool was not that good. You were severely bullied and threatened.

As you kept walking, someone noticed you, they walked up to you

"Hello there. You must be the new person. My name is Lizzy, what's you're name?"

You flinched of fear but calmed down