Is the wife sinful for remaining with her husband in the same house without establishing a legitimate marital relationship with him due to his incapacitation, and is she obligated to seek a divorce?

The wife must fulfill her husband's rights, treat him kindly, and not abandon his bed. The husband must fear Allah Almighty in his treatment of his wife, avoid bad suspicions and spying, and both spouses must beware of the devil's plot, which seeks to separate them.