In Islam, the concept of relationships in the afterlife, specifically in Jannah (Paradise), is not detailed with absolute certainty in the Quran or Hadith (sayings and actions of Prophet Muhammad). The descriptions of Jannah are often symbolic and meant to be beyond our comprehension as humans. Therefore, while there are some general descriptions of rewards and blessings in Paradise, the specifics of personal relationships, such as marriage and companionship, are not explicitly stated.
It is crucial to understand that Islamic beliefs emphasize the sanctity of marriage in this world and the importance of fulfilling marital obligations and commitments. Islam encourages love, compassion, and understanding between spouses, and divorce is considered a last resort when there is no other solution to irreconcilable differences.
In matters of the afterlife, Muslims believe that Allah (God) is the ultimate judge, and His decisions are just and merciful. It is not for us as human beings to determine or speculate about specific personal situations in Paradise, including relationships with others.
The focus in Islam should be on living a righteous and fulfilling life in accordance with the teachings of Islam. If a married woman is dedicated to her marriage and follows Islamic principles, she will be rewarded accordingly by Allah in the Hereafter. As for specific details of relationships in Paradise, they are beyond our comprehension, and it is best to trust in Allah's wisdom and mercy.
It's essential to seek knowledge and guidance from qualified religious scholars and sources to deepen your understanding of Islamic beliefs. Remember that interpretations and understanding can vary, so consulting with knowledgeable individuals is essential in matters of Islamic jurisprudence and theology.