Now that the whole article is out, (http://www.hypable.com/2014/02/07/jk-rowling-ron-hermione-interview/) it seems that there's marriage counseling in the wizarding world, and it may be what Ron and Hermione used to overcome their relationship challenges, so JKR was not saying that needing counseling dooms a couple, and was saying that counseling can help a couple survive, yay!