Snape had a Horcrux, or . . . Bellatrix had a Horcrux?

I think Snape and Albus Severus would bond over being bitter about Harry's celebrity status. Snape would explain all the stuff Harry got away with in school and Al would be like 'oh yeah?? Well your life wasn't ruined by growing up in his perfect shadow now was it??' And Al would tell a story about him favoring James Sirius and Snape would be like 'of course he did, I never expected anything else. I have higher opinions of flobberworms.'

Actually that could be a funny short story with Harry making a big deal about introducing Lily Luna to Snape when she starts Hogwarts because he knows how much his mum meant to Snape. Snape and Al both roll their eyes at his melodramatics.

Also, Snape takes points off of Gryffindor for Al's behavior even though he's in Slytherin. He's not going to cost his own House the cup and it's petty enough to drive Harry crazy when James Sirius writes home about it, which is reason enough to do it.

Edit:: At first, I was thinking that Bellatrix would raise Delphini but I don't think she would. She's pretty insane and Voldemort's just died again but now she's seen him be resurrected. I think it would be the Longbottoms Pt. 2 Electric Boogaloo, except she tortures anyone who she thinks has information about how Voldemort escaped Death. But if people didn't know of her horcrux then they wouldn't know to protect themselves from her either- I think Harry would lose someone very close to him. If I was writing it, I'd make it either Hermione or Ron. Maybe Harry doesn't realize that they're gone at first because he thinks they're in Australia looking for Hermione's parents. This could be a horror fic with mysterious deaths and people running scared until Bellatrix is eventually revealed.

I feel like Snape hated himself too much to want to ever want to cling to life forever. I could maybe see Bellatrix creating one if she knew how, might explain a bit of her fanaticism towards Voldemort. Or heres a twist what about Regulus? Suppose he was researching ways to destroy the one he found not out of the goodness of his hear or remorse for being a death eater, but instead in an attempt to eliminate a perceived rival.

For me that was a shock only Voldemort had Horcruxes in canon.