Besides her statement actually makes it easier on the couple. No doubt the news of them no longer sharing a home wiould have come out anyway. As she also mentioned no third parties were involved it hopefully gives both of them time and space to think on where they want to go with their relationship.
Even if it is to end in divorce for their daughter Isabelle it will be a lot easier if her parents can find a decent way of communicating with each other. If they find their way back together it would probably be even better for her, but only if that is what both parents truly want.