Is there any good reason to keep Baby Ariel in the game?

I've never seen her in my game, anywhere ever, other than manage households. I'd say go ahead and delete her.

i think she has immortality trait for some stupid reason so if you don't want trait on randomized other sim then maybe keep her

then again i don't play randomized townies so i deleted her cause i just delete the whoever spawns with her trait anyway

She has no value to the game at all, there is supposedly a hidden trait that will respawn on a random sim that looks nothing like her but you would probably just clear that random townie out anyways so delete away.

I changed her name, turned her into a mermaid, and hooked her up with one of my Reaper offspring sims. Apart from that, can't think of a use for her. :)

If you don't like Sims who are immortal and will forever be teenagers as your generations grow up, potentially talk to her and die before a single day passes for her, I would say no.

Otherwise it also depends, do you like having real world people in your game? If also no, deleting her works too!

I don't even know who she is ontop of only knowing she's real, so it's one of those "influencer" cases which helps on the deletion side

I always delete her in every save

There was (literally) no reason to have her in the game to begin with.

Thank you, everyone, for your responses.

I've never seen her in my saves, although I know she's in the game. I thought I'm going to remove her if she starts showing up everywhere, but she's avoiding me and I'm okay with it.
I like premades, but she's useless and I don't like immortal Sims (unless they're vampires, spellcasters or my own Sims that I've decided to make immortals for some reason). As long as she stays hidden in my saves she can stay.

I think I've seen her in the wild a grand total of once. I don't worry about sim count, so she's just there, but she's definitely on my deletion list if I ever need to clear out Other Households.