What husband's stand should be, if his wife disagrees with his mother?
                                Both the mother and the wife have rights on you (Questioner); therefore, you are obliged to treat both justly, resort to wisdom to please both and intiate reestablishing cordial relations among them. And Allah Knows Best.
                             
                        
                            
                                
                                A woman used contraceptive pills, and her menses exceeded (15) days, is it permissible for her to fast?
                                The maximum of menstrual blood is (15) days, but if it exceeded that due to a medication, or the like, then it is Istihadah (bleeding outside the monthly period), and in this case she should perform Ghusl (ritual bath), pray, and fast. Moreover, she is obliged to make up for the missed fasting days which exceeded her regular menses. And Allah Knows Best.
                             
                        
                            
                                
                                Is it permissible for one to masturbate in order not to commit fornication?
                                This is called committing the milder of the two evils such as eating a carcass in fear of death, and this happens when committing fornication is very likely to occur.
                             
                        
                            
                                
                                Does the wife have the right to stop her husband from visiting some of his relatives because their meetings involve religious violations?
                                Couples should advise one another in kindness, and the wife can stop her husband from committing sin by resorting to a kind and tactful approach.