[quote=@KatherinWinter]

[@VitoftheVoid] if she doesn't want 5p be there then she shouldn't be there. T
Your making Rei a hostage of Hel. The benefactor and Housekeeper would never force her to stay. They would separate the two. 

[/quote]

It's generally not terribly dramatic, but if you're not keen on the idea, happy to swap things about and say Rei is willingly sticking round out of a sense of obligation toward the younger kid.