I am married for 21 years issueless. All these years my MIL was staying with my SIL as her husband was in abroad and doing all work at home. My husband was the only person who met all her expenses including medical though MIL has got two sons and two daughters. We did not mind as we thought it was our duty and we both are earning. Now MIL is staying with me stating it is the responsibility of a son to take care. She will not do any work and will not cooperate in the house and now my husband is jobless the other son and two sister in laws are not bothered. Now what to do? Are there any legal points so that all the four should share and keep her. Kindly clarify.