Adult child not on board

It sounds to me like she is either jealous/doesn't want to share parents, doesn't want to have to be bothered by a younger person around the house, or is insecure in her position as your daughter. All of these things are vert SELF focused of her. Imagine if you told her that you were both trying to conceive and she responded with by telling you that she was not on board with the idea because it would somehow take away from her. Either you need to be able to reach her as far as what is going on with her emotionally that she is having so much difficulty with the idea, or she is being very self centered and may need you to lay down the law that she can't dictate to you wether to expand the family or not. She does not seem to be respecting you as parents if thats the case. I wish i could give advice on how best to resolve the issue in a way that wouldn't tangle up your adoption process. Has there been any progress? If so please update us