That’s right, he’s not yours. And he’ll never be yours. We’ll make sure he’s safe and loved and that he knows how to protect himself, but I’ll never let my boys, any of my boys, be afraid again. They finally have back what you took from them. A mother who loves them.
They may have you back, but that doesn’t mean their pain just vanishes. You were gone for a long time. Can’t fix that. You may be the best mother you can be to them now; won’t fix the past. And you’re going to try and make that up with Jace, hmm? Be there for every milestone in his life unlike how you were with Sam or Dean? Raising him right won’t clear your conscience.