How can a married woman deal with her aversion to her husband, his kindness, and her desire not to displease Allah?

If the refusal is from you, then fear Allah and know that obedience to the husband in what is good is obligatory, especially concerning the marital bed. As stated in the Hadith: "If a man calls his wife to his bed and she refuses, and he spends the night angry with her, the angels curse her until morning."

And if the husband is the one who refrains, then admonish him and remind him of your right upon him, as Allah Almighty says: "And live with them in kindness." And beautify yourself for him.

Beware and fear Allah concerning the matter of the husband, for the right of the husband is great.