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Before Hogwarts, his accidental magic, activated when Dudley was trying to physically hurt him or did physically hurt him. Snape's accidental magic activated just because Petunia insulted him once.
She was the sister of Lily Evans, but Petunia was a Muggle, unlike her sister. Snape and Petunia strongly disliked each other, from the first moment they met. Petunia, who was contemptuous of anything out of the ordinary, viewed him with disdain because of his poor economic status, and because he was such an oddball.
One of Petunia Dursley's biggest secrets was the promise she made to Albus Dumbledore. When James and Lily were killed at the hand of Voldemort and Harry was dropped off on the doorstep of 4 Privet Drive, there was a letter accompanying him.
The fan asked the author if Aunt Petunia was a Squib (a non-magical person who is born to at least one magical parent) and Rowling replied: "Good question. No, she is not, she is not a Squib. She is a Muggle.
Family Lineage
Though nominally a Muggle-born witch, Hermione is descended from the Dagworth-Granger family through her father's squib heritage.
Dumbledore responded saying that Petunia could not study at Hogwarts due to her being a Muggle and even though he responded kindly, Petunia felt hurt and left out. From that point on, Petunia wanted nothing to do with magic or the wizarding world and frequently called Lily a "freak".
Lily Josephine Evans (30 January, 1960–31 October, 1981) was an English Muggle-born witch, a daughter of Marion Evans and John Evans, the younger sister of Petunia Evans and elder twin sister of Willow Evans.
Petunia tried to hit Harry with a frying pan which thankfully Harry dodged.
Her last line there is, "You didn't just lose a mother that night in Godric's Hollow, you know. I lost a sister." Since Aunt Petunia usually prefers not to acknowledge Harry's mother at all, it's a surprisingly sweet moment. In the book, she uses her last words to say "Well — goodbye" to Harry.
Snape loved Lily deeply: through their years at Hogwarts; through her marriage to another wizard, James Potter; through his time as a Death Eater; and long after her murder at the wand of Lord Voldemort.
His feelings for Lily seemed to be the motivation behind many of his decisions and it often seemed as though their friendship was the thing that he held most dear. If it wasn't for Snape's love for Lily, it could be suggested that the story of Harry Potter would have looked completely different.
Snape was in love with Lily and couldn't move on because of his guilt. Through his memories, it's revealed that he was worried about Harry's future when Lily and James died and that he was afraid of seeing Harry when he's old enough to attend Hogwarts.
The fact that Lily chose James Potter, Harry's father, only fuels Snape's hostility towards Harry. Snape's character has been widely acclaimed by readers and critics. Rowling described him as "a gift of a character" whose story she had known since the first book.
In the book, we learn that James Potter and his friends were bullying Snape, and Lily came to his defense. Instead of accepting her act of kindness, he rejected her and called her a "mudblood" — an insult to witches and wizards with Muggle parents — despite his own impure bloodline.
Writing on Pottermore, Rowling explains how their cruel treatment dates back to Petunia's jealousy of her sister Lily's magical abilities when they were growing up, and Vernon's dislike of anything out of the ordinary.
"James was amused by Vernon, and made the mistake of showing it." Petunia refused to include Lily in her wedding. And the Dursleys didn't attend the Potters' marriage ceremony.
Voldemort can not comprehend love, and so it destroys him to touch Harry because Lily's love for her son runs through Harry's veins and body. ems Harry burnt Quirrell's face when he touched it.
One of the most beautiful moments in the entire Potter series came from when Dudley and Harry were able to make amends. This occurred in Harry Potter and the Deathly Hallows when Dudley told Harry that he didn't think he was a waste of space. They even shook hands!
No doubt Petunia would have been saddened by the news of Lily's death but those complicated emotions – grief, regret and unresolved jealousy – were probably buried in the distractions of housework, gossip and pandering to her son Dudley's every whim.
Dear Petunia, It is with great sadness that I must inform you of the death of your sister and her husband. They were murdered by a Dark wizard known as Lord Voldemort, whose cruelty and violence they had been fighting for years. I tried my best to protect them, but, alas, I regret to say that I failed.
Petunia learned that Lily died by a note and a baby on her doorstep. How incredibly cruel of Dumbledore. The sisters may have been estranged, but they were still sisters. Dumbledore also dumped a baby on her without asking if it was okay, and then seemed to blackmail her into keeping Harry.
Queenie and Jacobs' marriage is a joyous moment for the characters after their victory, but Albus is forced to watch from afar. He's dealing with his own heartbreak. During the battle in Bhutan, Albus had been freed from his blood pact with Grindelwald.
Uncle Vernon and Aunt Petunia (who had secretly longed for magic herself) didn't see much of their nephew, for obvious reasons. Dudley, on the other hand, reunited with Harry a few times so that their children could play together. Their relationship was awkward, but this was a major change from when they grew up.
He has grown afraid of Harry's connection to Voldemort. Perhaps Voldemort, knowing Dumbledore's love for Harry, would possess Harry and provoke Dumbledore to kill him. So, Dumbledore attempted to avoid Harry throughout Book 5 for Harry's own good.