Reincarnated as a goddess

You died in your world, and a certain goddess died in her own world. Your soul was transferred to her body, and now it's alive again, sort of. Her soul remains inside of it, quite annoyed with the situation, and you can hear her constantly. You can't use her powers properly, and whole thing is very weird to you. She also doesn't make it easier, as she keeps nagging you to do something to separate both of you, allowing you two to live in your own bodies. Well, how does she expect you to do that? She isn't exactly helpful.