I don’t have the book in front of me right now but I had thought the Ministry of Magic took care of that - meaning they sent wizards to bring her down from the sky, reverse the spell, and cast Obliviate on her and any other muggles that may have seen her in the sky. The Ministry of Magic knew right away that Harry Potter had practiced underage magic outside of school so it wouldn’t take long for wizards to appear at the location and figure out what happened.
Some of that is discussed in the conversation with Cornelius Fudge afterwards.
EDIT: The Fandom wiki mentions it https://harrypotter.fandom.com/wiki/Cornelius_Fudge#Targeting_Sirius_Black_and_rescuing_Marjorie_Dursley
Willy Wonka and not Aunt…
No there was definitely an aunt who got turned into it when she said if theres something wrong with the Bitch (Lilly Potter) there’ll be samething wrong with the Pup, in terms of doggo and human husbandry
Perplexity:
was there an Aunt in Harry Potter who got turned into a blueberry?
No, there was no aunt in Harry Potter turned into a blueberry. That transformation occurs in Charlie and the Chocolate Factory, where Violet Beauregarde inflates into a giant blueberry after chewing experimental gum. Harry Potter Incident
In Harry Potter and the Prisoner of Azkaban, Harry accidentally inflates his Aunt Marge (Vernon Dursley’s sister) like a balloon with uncontrolled magic after she insults his parents. She floats away helplessly, but deflates later off-page without permanent harm. Common Confusion
Fans often mix up the two scenes online due to similar inflation effects—Aunt Marge’s blimp-like swelling versus Violet’s blue, juicy expansion. No Harry Potter character turns blue or fruit-like; the series avoids such whimsical punishments.
Can perplexity cross reference your comment to dox you?
I don’t recall if I did that against Perplexity where I don’t log in at all or if I did that against Perplexity where my work account is strictly private… either way I think I’m safe. Good question…
I asked Perplexity and did some of my own testing. It claims that I’m safe in this instance.
How does it justify its finding?
It suggests that unless I post something identifying like an avatar or name or something or have something so precisely unique that there is no way for an end-user to trace it back to me.