She asks: “Were we supposed to have had a biological child and this child is the same soul as we now have in our adopted child, or are they different?”

This is a quite interesting situation you are raising, because it is indeed possible for such an arrangement to come about, to have someone come back into your life through adoption who you spent lives with in the past and who wants to be with you, and vice versa. So adoption represents the only feasible way to come together for a joint reincarnation if there is a problem with conceiving a child by a couple wanting children. After all, your channel has recounted a number of circumstances where it has been arranged and facilitated for pet owners to find their way to a new animal to adopt who has lived with them before in other lifetimes or even in their current lifetime, given that dogs are short-lived compared to humans and that is quite possible to be a convenient arrangement for a reunion. But the same thing can be true for humans if circumstances warrant and there is a benefit to the parties to have a reunion in that fashion, not through direct biologic conception to carry a desired loved one as an infant in utero and give birth, but to meet up with the individual after being birthed by someone else, and essentially reuniting to constitute a family, and that is the case here. It neatly provides the best of both worlds, being able to come together yet again, while also fulfilling the karmic imperative to go through a period of childlessness and its sadness and come away with the determination to seek another outlet to give love by adopting. That is a healing journey greatly needed for those involved here.