I understand that excitedable and uplifting sermons can bring good feelings to a person who wants to feel emotion in worship. I’ve attended non-Catholic services where the sermons were animated. Catholic worship and sermons, tho, are more insightful and give better understanding and deeper meaning to the readings heard at each Mass.
You may want to suggest to your wife to focus on the readings and see how the priest’s homilies relate to them. You may even want to discuss the homily to her after Mass. This may help her see that having a faith in God is not all about how she feels or how stirred-up she gets emotionally, but about how she can get stirred-up spiritually.
God Bless!