How can I deal with my husband's sister who causes problems and hates her brothers' wives, and will my prayers be accepted under these circumstances, and what is the way to convince my husband to move out of the house?

It is the wife's right to have a suitable, independent dwelling, and she is not obliged to live with her husband's family. If the husband's sister is harming the wife, then it is the wife's right to live in a separate home. The husband must provide an independent dwelling, and the wife must be patient with the mistakes of the husband's family until a separate dwelling becomes available. One must be careful not to assault the husband's sister or insult her, especially if she is ill.