Is it my responsibility to feed my siblings?

Hello, both my husband and I are retired and lixe in fixed income. We have a lot of bills to pay every month including our mortgage. I also need money to pay for my copay and prescriptions. I have siblings in the Philippines that made me feel guilty and it made me feel that it is my responsibility to send them money every month to feed them. Sometimes I send them money when they tell me they don't have money to buy food. But I see in facebook the pictures that my sister posted that she drinks and smoke and have fun with her friends. She always nagged at me and tell me sad story that they don't have food to eat. Her husband doesn't want to work so she work her butt off and she is now retired but her retirement is not enough to feed her husband and oldest daughter 40 yrs old with lot of children with different men. I told her to stop supporting her daughter and husband but she doesn't tell him that but instead it's me she bugs all the time. She sent me a message today stating that God used her friend and she gave her money to buy food. I told her to just trust in God for all her needs. But I am married and my husband doesn't want me to send them money because we have a lot of bills and are now retired and live in fixed income. My other two brothers in the Philippines is the same thing, the other one sent me message saying he has diabetes and high blood pressure and the other one says his physically challenged daughter has cancer but all he does is drinking alcoho. Any advise?

Read more: Is it my responsibility to feed my siblings?