A few questions, how into creating the idea of them living here before can we go?

Or u can give me an idea, so BB is created from another ai in a place card the moon cell which effectively exists in the moon. Would I develop an AU of her canon story into the setting for her being a “baby” or would something like she was a idk computer program that lived here as an equivalent to her “seeing her in the photo.” Or do I just say she existed as a child at some point despite her canon that not being possible?

I just want to know how I can develop that side of her with the story 🥰🥰