What if the relationship was not a godly one from the beginning and the benefit of separating seems to be the best outcome for the kids?
Exodus 20:14 and 20
You shall not commit adultery.
Unless the marriage was not a Godly one, in which case you are given licence to pursue someone who is bound by marriage to another, and they are given licence to pursue others outside of their marriage.
Exodus 20:17
You shall not covet...your neighbor's wife...
Unless the marriage was not a Godly one, in which case you are given licence to covet she who is bound by marriage to another.
Is that what your translation of the Bible says? Is that the point of view you are trying to finesse? Because I have several translations on hand, and none of them have the extra qualifiers that you are trying to stitch on to them.
What do you know of God's plan for this woman? Is our God so weak and powerless that He cannot still yet redeem this marriage? Doesn't our God have the power to take a union that isn't holy and acceptable, and MAKE IT holy and acceptable through trial, humility, and forgiveness? I know MY God does.
It is made clear time and time again in God's Word that He HATES divorce. That doesn't mean that it doesn't happen. That doesn't mean that it isn't warranted in some cases. But if both members would turn their hearts to Christ and follow His commands for forgiveness and choose to love each other again, then they can be reconciled, and God is glorified. Do you know whether this is God's plan for this couple, or not? Has He spoken to you in prophecy concerning their future?
Or rather, in your heart, do you hope for the divorce? Will you be happy when it happens? Are you going to take pleasure in the fact that a marriage is ruined, two peoples heart are broken, and their childrens' lives thrown into disarray?
Are you praying for her family to be saved, or are you praying that you get what you want? Are you actually praying for what GOD wants? Are you hoping in the flesh, or hoping in the Spirit?