A divorce petition cannot be entertained before the expiry of 1 year from the date of marriage. If you do not agree to divorce by mutual consent, she can not legally force you for it and you have every right to challenge her divorce petition. Which raises the point that, as she has already threatened you, she would have to file a petition for divorce on false and frivilous ground in order to get a divorce from you. So all you have to do it be prepared mentally and legally to challenge her false and frivilous grounds and there is no way she can get a divorce if you succeed in proving her wrong in court.
The other side of the coin is that even if you suceed, what would be the point of being married to a person who does not wants to be remain married with you. It will only cause you mental agony and irritation. In my opinion, it would be better to settle the matter with the help of elders, if not, then go for mutual divorce and start a fresh matrimonal life.