After sera and the archangel banishment Nikki made her a fallen angel Nikki realized heaven is shit a traitor as she got her hair cut new outfit as she help Rosie with kids Rosie tears up as Nikki came this far

As Nikki into hazbin hotel

Charlie gasp: Nikki ? She noticed horns different outfit

Nikki nods sadly: I’m a falling angel

Vaggie and the others feeling empathy and welcome Nikki in open arms even if she’s 10 years old alastor and Lucifer adopted Nikki as their own daughter