Dumbledore, Fred, Sirus, Tonks, Remus, Dobby, Snape and Lavender are all alive because their death was so hard to handle.
It's the year after the war and hogwarts was about to finish being rebuilt. Everyone is waiting to receive their hogwarts letters. Harry was staying with the Weasley's (even though he and Ginny broke up after deciding that they were better off as friends) while Hermione was staying at her parents house alone ever since she found out that her parents died. Ginny and Harry have kept her company but she felt like something wasn't right. She sent them away to keep them safe then she finds out there dead, it just wasn't right.
Hermione's POV:
knock knock knock. I walk to the door to open it and find someone I never thought of ever, "Hello, I'm looking for Mr and Mrs Granger. Is this their residence?" Said a beautiful, tall woman with platinum blonde hair that goes down to her waist. "Unfortunately they no longer are alive, but I am their daughter Hermione Granger. Is there anything i can do for you on their behalf?" I asked with tears threatening to to fall but I held them in. "Yes I was actually going to talk to them about you. I wish they could have told you themselves but I am Louisa Zabini and I am your biological mother." Louisa replied. The shock on my face had turned into happiness because she always thought there was something her parents wouldn't talk about but now it makes so much sense, but that means I'm also a pure blood. "When i gave birth to you i gave you i gave you the name Hermione Emia Zabini and you also have a twin brother Blaise, perhaps you have met at hogwarts. But other than Blaise and myself there is no one, your father was killed in the war and no we were never followers of Voldemort, just because we are pure bloods doesn't mean we follow that evil psycho."