She has tried every possible way not to divorce.
How about the Nike philosophy . . . just do it! In this case, just DON’T do it!!!
I’m looking for something that can help her get through it without feeding her false information that sounds good but isn’t true and will do more harm than good in the long run.
If you are concerned about her immortal soul, recommend these books . . .
The Bible–the book of Matthew Chapter 19.
The Catechism–the sections on the sacrament of marriage and the 6th and 9th commandments. Especially:
2384 Divorce is a grave offense against the natural law. It claims to break the contract, to which the spouses freely consented, to live with each other till death. Divorce does injury to the covenant of salvation, of which sacramental marriage is the sign. Contracting a new union, even if it is recognized by civil law, adds to the gravity of the rupture: the remarried spouse is then in a situation of public and permanent adultery:
If a husband, separated from his wife, approaches another woman, he is an adulterer because he makes that woman commit adultery, and the woman who lives with him is an adulteress, because she has drawn another’s husband to herself.177
2385 Divorce is immoral also because it introduces disorder into the family and into society. This disorder brings grave harm to the deserted spouse, to children traumatized by the separation of their parents and often torn between them, and because of its contagious effect which makes it truly a plague on society.
You have an obligation as a Catholic trying to live a holy life to love your mother. Love isn’t a feeling. If it was then how could I possibly love people who I dislike? No, love is an act of the will. A CHOICE. No matter how much you don’t want to tell your mother that divorce is a mortal sin, that is the most loving thing you can do for her. This is not my opinion . . . it is the commandment of the church.
I will pray for you and your mother and anyone else who she affects by her decision.
May the Holy Spirit be with you always.