بسم الله الرحمن الرحيم
(1) Was he a Hindu or a Muslim at the time of marriage?
(2) How did he marry you? Was your nikah solemnized as per the Islamic method in the presence of two or more witnesses or not?
(3) Do you have any proof that he goes to temple and does Puja etc?
(4) Does he do Islamic practices (salah, fast, going to mosque etc) or not? Reply the above mentioned questions then we could give you a reply in this aspect.
Otherwise the common reply of your question is that it is a sin for a woman to demand for talaq without severe compulsion and problem. Yes, if a woman demands for it in compulsion and problem and the husband gives talaq in return then talaq shall take place. In short, talaq does not take place merely on the demand of wife. Also the woman cannot give talaq herself, rather it is necessary that the husband gives talaq though in response to wife’s demand or on his own choice.
Allah knows Best!
Darul Uloom Deoband
This answer was collected from the official ifta website of Darul Uloom Deoband in India.