ANSWER:

No problem in giving your zakat to her if she’s classified as poor or needy but if she’s not poor or needy then this is not permissible. 

I want to know if I can pay zakat to my mother in law for her expenses, my husband does not have savings to take care of any major expense of his mother. Her elder son too cannot pay for her and I am not sure if he can afford or not. I work and can pay but can it be considered as zakat, she is my maternal aunt also. Please advise.