Mental harrasment

You can not file divorce case within a year of marriage you have to wait for 11 more months , utilize these times and get started to collect evidences against her and make a solid ground to file and win the divorce case , go her background and collect proof o

If you are really troubled so much and she has scared life out of you, then within one year, in extreme hard conditions, you can apply for divorce.  You have to file divorce petition on the ground of mental cruelty along with application seeking permission under Sectin 14 of Hindu Marriage Act.  The court first take up youur application under Section 14 and if it get convinced, the divorce process starts and the first stage is that mediation,in which both parties are given opportunity to conciliate their differences. 

Why I have given this advice is that if she attempts or takes any drastic step hurting herself implicating you, then the pleadings in your divorce petition placed in the court record come to your rescue.  But also be prepared for maintenance, DV, Section 498-A and Dowry Demand cases to be filed against you.

Thank you for your valuble suggestions, i didnot take any dowry from her or no demands from my side

@ laxmi kant sir ... what do u mena by background verification and how to do it, collection of evidence how can i do that can you please suggest ..i am asking for my safety dont want to get into any mess thats is the reason..

If the  marriage is  not consummated...i.e. no physical relations took place even for once...then you cnfile Petitin u.s.12[1][a] of The Hindu Marriage Act, nullity on non-consummation

The best option available before you is the suggestion made by learned advocate Mr. Chandrasekar, if you are really living in a dire and nightmarish atmosphere, the best thing is to come out of her relationship and start to live away from her separately.  Or, live separately away from her for some time say atleast for another 6 months without communicating to her by any means, watch the developments silently, if things become alright, arrange for reunion and start rather resume your matrimonial life or proceed for divorce as suggested.