horrible people don’t like to pray, prove to yourself and to her that she is not a horrible person and each day, just for like 50 seconds, pray the Our Father together.
Of course, a husband and wife can share a rich, deep, profound, wonderful prayer life, but if a couple is not in the habit of praying together, we can start with baby steps.
Often, people who are considered “horrible” are living for themselves. Once a heart and mind changes to live for the love of Christ, the horror just vaporizes away. See if we can start pouring a little love in her heart, drop by drop, day by day, little by little, a little love will counter a mountain of hate.
And, I’d hate to be the devils advocate, but sometimes when others are horrible, it’s because we ourselves are horrible but we ourselves are blind to our own horror. Not saying that you, specifically are horrible, just offering a bit of advice to look inside before looking outside (splinter and plank). Ask for grace and wisdom for the strength to be an instrument of God’s will in your wife’s life. Keep loving her, even if you don’t feel like it, LOL (love is enacting for the true good of the other).