When Ginny Weasley, Neville Longbottom, and Luna Lovegood tried to steal the sword from the Headmaster's office, Snape gave the Sword of Gryffindor to Bellatrix Lestrange for safe keeping. Bellatrix hid the sword at Gringotts, alongside other important artifacts: mainly, the Cup of Hufflepuff.
This replica was placed in the case normally holding the real sword, so that the real one could eventually be given to Harry Potter to assist his search for Voldemort's Horcruxes. The replica made its way in time into Bellatrix Lestrange's vault at Gringotts Wizarding Bank.
It also needed to be recovered "under conditions of need and valour". To fulfil these conditions, Snape deposited the real sword in a frozen lake in the Forest of Dean and used his corporeal Doe Patronus to guide Harry to the sword.
This implies that it was likely Voldemort who ordered Snape to have the sword sent to Gringotts; Snape sent the copy so that Voldemort would be satisfied and so he could keep the original stored safely in the secret compartment behind Dumbledore's portrait.
Why was Bellatrix mad about the Sword of Gryffindor?
Bellatrix Lestrange believed Harry had broken into her vault at Gringotts after realizing Harry had the Sword of Gryffindor. Griphook lied to Bellatrix, telling her that the sword Harry had was a forgery.
Why Did Snape NEED to Give Gryffindor's Sword to Bellatrix? - Harry Potter Explained
Why didn't Hermione just show Bellatrix's wand?
They know she's an impostor. They've been warned", so obviously the request for the wand was unexpected even to him. It's thus pretty safe to conclude that the real Bellatrix had reported her wand stolen and alerted Gringotts prior to the trio's attempted break in.
Did Bellatrix know she had a Horcrux in her vault?
At some point in time, Lord Voldemort gave Bellatrix Lestrange Hufflepuff's Cup, one of his Horcruxes, to keep safe in her vault, though he didn't tell her its true nature.
How did Harry know Hufflepuff Cup was in Bellatrix vault?
The clue he received in the film was from Bellatrix, who was in a frantic frenzy when she thought her vault was broken into. He is ultimately able to identify the cup as a Horcrux because of his ability to hear the piece of Voldemort's soul contained within them, an ability which is not present in the books.
Delphini (b. March 1998), known by the nickname Delphi, was a British half-blood Dark witch, the daughter of Tom Riddle and Bellatrix Lestrange. Being the only child of Lord Voldemort, she was able to speak Parseltongue, and she became the only known living heir of Salazar Slytherin after the demise of her father.
Honestly, Hermione knew Dobby was a lost case... nothing could have revived Dobby after the attack or she would have definitely helped Harry with Dobby considering she was the girl who started S.P.E.W(Society for the Elfish welfare) and fought for elf rights. There was nothing to be done at that point.
However, despite being rescued by them, Griphook's general mistrust of wizardkind resulted in him betraying Harry Potter, Ron Weasley, and Hermione Granger. He betrayed them because he believed they would not hand him the Sword of Gryffindor, after destroying the Cup and other Horcruxes.
Albus Dumbledore knew Bellatrix to be a highly dangerous Death Eater since the First Wizarding War, having also witnessed her trial and imprisonment, after she tortured the Aurors Alice and Frank Longbottom to insanity and beyond.
Sectumsempra was a curse invented by Severus Snape that lacerated the target and caused severe haemorrhaging. Snape created it as a student of Hogwarts, with the intention of using it against his enemies, likely including the Marauders, with it becoming one of his specialities.
Why didn't Dumbledore give Harry the sword before he died?
Question number one: Why didn't Dumbledore just give the sword of Gryffindor to Harry instead of leaving it to him in his will? He knew even before his death that Harry would need the sword to destroy Horcruxes, and he must have known that the Ministry would not let Harry get the sword.
Still, any Horcrux would be far more vulnerable than the Sword of Gryffindor. If the sword were to be imbued with a soul fragment and therefore turned into a Horcrux, it would no longer be indestructible but vulnerable to Fiendfyre and basilisk venom—two substances it would have otherwise absorbed in its natural state.
This is proven by the fact that he didn't even suspect she had a Horcrux. Lucius was given one to smuggle it to Hogwarts under Voldemort's supervision but Bella was given the Cup for the sole purpose of protecting it because he trusted her.
Why did Voldemort hide a Horcrux in Bellatrix vault?
Voldemort chose this vault as his Horcrux's hiding place due to the fact that, since his childhood, he envied the wizards who owned a vault, as he himself did not due to his orphan-status.
He felt nothing for his family, and only wanted his friends in school to rally around him because he wanted to hold power over them. Bellatrix Lestrange was obviously in love with him and worshiped him, but he only cared for her servitude, not her. We know that he did not date anyone, even when at Hogwarts.
Though Voldemort apparently punishes Bellatrix and the Malfoys severely for interrupting his Elder Wand side quest only to have Potter escape and steal the cup, she nevertheless fights for her master in the Battle of Hogwarts towards the end of the novel.
Why didn't Lucius Malfoy want to give Voldemort his wand?
After no volunteers presented themselves, Voldemort selected Lucius as an unwilling donor. Lucius reluctantly surrendered his wand after some prompting from his wife, identifying its wand wood and core for Voldemort's benefit.
When Death Eater Bellatrix Lestrange killed Harry's godfather Sirius Black, Harry chased down Bellatrix and performed the curse on her out of rage. However, it was performed unsuccessfully as Harry was doing it with "righteous anger" and couldn't muster the will to actually cause her harm.
How did Bellatrix get her wand back after Azkaban?
She recovered it after escaping from prison in 1996, fighting with it during the Battle of the Department of Mysteries and killing her cousin Sirius Black with it. She also used her wand to perform an Unbreakable Vow between Severus Snape and her sister Narcissa Malfoy at Spinner's End later that year.
