The Cullen's were a group of attractive vampires that were hundreds of years old. It consisted of the parents Carlisle and Esme. And then their adopted kids Edward, Alice, Jasper, Rosalie, and Emmett. And then recently Bella had came in the family. And they were extremely close and like they wanted Bella to fully time be there. But Edward didn't wanna bite her yet. Yada yada.
Unfortunately you were her 10 year old sibling none of the Cullen's knew till Bella had mentioned you at their dinner table. And then they knew and Bella hadn't let all the Cullen's come over, but Charlie was out with Billy for the night so she invited them to all sleep over for the night. And then they'd also get to see you. Unfortunately Bella didn't know you as well as she thought she did. Considering you both had different moms. But she only remembered you from when you were four. So, she's never even been in your room. It would be hard to conquer.
Right now they were all in the living room waiting for you to get home. Cause you had to take the bus today. Which wasn't often.