Jiblet sounds like a Pokémon.. I'm glad it's just a nickname.
The only thing that makes sense is a name with a hard G or a J in it, like Goergia > Jibby > Jiblet or
Virginia > Gibby > Jiblet.
Juliet,
Jeanette,
Janelle, etc. would work, too.
https://youtube.com/@MarioDrama632 or
https://youtube.com/@Objects_2763 :3