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

I’ve seen her in my game but I have no idea who the girl is.
If Baby is indeed a RL celeb and part of a collaboration she should have been temporary like Millie Bobby Brown that time. If my memory serves me correctly Millie the Sim brought a box of presents for a week and after that she just moved on. Hello and Goodbye. The way it should be. ?