I think Belle would be more than willing to accept being tied for first place in Rumple’s heart if the other object of affection was a child. No doubt her heart would be equally split between husband and offspring. But if she does accept that the power/drug holds equal weight in Rumple’s heart and stays with him, I don’t know that it’s healthy. Yes, she’s accepted the man he is, but the man she is accepting is a dangerous drug addict who has shown that when push comes to shove, he’ll do what he thinks is necessary (up to and including murder). So what does that say about Belle’s character that she’ll take him back, love him, and accept him knowing that there is a very real chance that he’ll go all hat-sucky (or the equivalent) again. At what point does she become hopelessly naivee and frankly dumb?