She placed Cedric's father Amos Diggory under a powerful Confundus Charm and made him think that she was his niece, despite neither Amos nor his wife having any siblings.
Using her acting skills, she was able to disguise herself as the caring niece of Amos Diggory. She made Albus and Scorpius think of her as a kind person who wanted to help them in their noble (if not misguided) goal of bringing Cedric back to life, hiding her true agenda of bringing Voldemort back from death.
She meets young Albus Potter and leads him to believe she is the niece of Amos Diggory, and cousin to the long-dead Cedric Diggory. But in the play's third act, Delphi reveals herself to be the daughter of Voldemort and Bellatrix Lestrange.
Right up until her big reveal in Act II of Part 2, Delphi is posing as Amos Diggory's niece in order to access Harry, the ministry, and ultimately the time turner. If she'd succeeded, she would've been known publicly as the Augurey, but most likely wouldn't have taken the last name Riddle, as per Voldy's lead.
Therefore Harry would be considered only 'half' wizard, because of his mother's grandparents." Delphini's paternal grandfather, Tom Riddle Senior, was a muggle, so she is a half-blood.
The Life of Delphi Diggory (Voldemort's Daughter Explained)
Who was Delphini raised by?
Delphini was raised by Euphemia Rowle, who took her in at (most likely) the behest of her step-father, Rodolphus Lestrange in return for gold. Euphemia was not a warm sort of person, according to the description given.
This is a great explanation and is exactly how I saw Voldemort when I first read the books (long before Cursed Child). He allegedly conceived her with Bellatrix in the months leading up the months final battle. Basically Delphi was born shortly before the trio got caught by the snatchers and brought to Malfoy Manor.
Delphini isn't really a Death Eater and doesn't have a Dark Mark, but she does have a tattoo of her own. When Albus and Scorpius first notice the tattoo on the back of her neck, Delphini explains that it's a reminder of her childhood, since Rowle had kept one of the mournful birds as a pet.
When Harry found out about Delphi's existence, he postulated on whether or not she was a Horcrux. While she is not, technically-speaking, an actual Horcrux, she somewhat functions as one. While she lives, Voldemort's memory lives on.
Sometime following this, Bellatrix would secretly engage in a sexual relationship with Voldemort. Out of this union would be born their daughter Delphini, who would be given over to be raised by the Rowle family, a family sworn to Voldemort.
Lord Voldemort had no wife he and Bellatrix just made a baby together. Voldemort couldn't love anyone. But the girl mother (In cursed child) is Bellatrix Leatrange.
Harry Potter and the Cursed Child unearthed many revelations but none were as shocking as the introduction of Lord Voldemort's daughter, Delphini. The young Dark witch, nicknamed Delphi, was the product of Voldemort's romantic relationship with Bellatrix Lestrange.
In Harry Potter and the Cursed Child, it is revealed that Bellatrix gave birth to Voldemort's daughter Delphi in Malfoy Manor before the Battle of Hogwarts.
Because to a pureblood fanatic like Bellatrix, Harry is a Mudblood because one of his parents (Lily Evans) was a Muggleborn. Anyone with Muggle ancestry is one, including Snape since his father was a Muggle (Tobias).
It is assumed Bellatrix was at least initially drawn to Lord Voldemort because they both believe in an ideology that favors pure-blood wizards and witches over other members of the community. This elitism, shared by the Malfoy and Lestrange clans, was instilled in Bellatrix since childhood.
Her name literally means "female warrior" in Latin, which is a nod to her aggressive behavior. Her surname Lestrange is a French variant of "strange", a perfect description of her strange personality and her maiden name Black is also a telltale about her dark life, as the color itself doesn't absorb light at all.
Delphini "Delphi" Diggory is Voldemort's secret daughter (wow, the Potterverse is turning into a soap opera). She wants to resurrect the Dark Lord—not necessarily to bring evil to the world, but just because she wants to meet her dear ol' dad. It's actually kind of sweet…in a completely evil way. Ooh, dang.
Why didn't Bellatrix make a horcrux? - Quora. Because her life goal was just to please the dark lord. Not immortality, but to live out her life committed to Voldemort, doing whatever he says. Of course, there is also a possibility that she didn't know about horcruxes.
After Lord Voldemort's final defeat, Rodolphus was imprisoned in Azkaban once more. In 2020, he escaped from Azkaban once again, and set to look for Voldemort and Bellatrix's illegitimate daughter, Delphini, informing her of her destiny and heritage.
Being the only child of Lord Voldemort, Delphi became the only known living heir of Salazar Slytherin after the demise of her father. Delphini was imprisoned in Azkaban for the murder of Craig Bowker Jr.
It is unknown how Delphini learnt the skill of unsupported flight, and whether it was biologically inherited, passed down through writing, or learned independently.
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.
In the Harry Potter and the Deathly Hallows movie, Snape showed how much he loved Harry, providing him with his memories and showing that he saw Lily in him, his last words echoing this: "You have your mother's eyes."
