Is a wife entitled to refuse shared accommodation with her husband's sister or her own sister and her husband? And is a husband permitted to compel her to do so?

If the dwelling is spacious and the facilities are not shared, the wife has no right to object to the husband's relatives living there, unless they harm her. However, if the dwelling is cramped and there is a fear of non-mahram men seeing her or of a private seclusion (khalwa) occurring, she must request a separate dwelling, and the husband is not permitted to compel her to stay in that dwelling.