AGONY: Why should my husband's mother be my responsibility?

RELATIONSHIPS  MARRIAGE

My mother-in-law is elderly and she regularly comes for specialised treatment in Kampala.

My husband has siblings in Kampala who are well off and any of them can attend to their mother. My husband is the only boy and the heir of his father, and that makes it understandable that she would want to live at our home when she comes to Kampala.

However, what worries me is that everyone says they are too busy and they think I should cancel my programmes (even work) to transport their mother to doctors' appointments.

Then on Sunday, her children come and pick her and take her out or to visit other relatives in Kampala.

I also have my own mother who needs my help sometimes and none of them helps me.

How can I let them see that their mother should be their responsibility, without them taking it badly?