Name calling once and few times in text comes under mental c

My wife was not responding me for one month when I was sailing, I said get lost let�s go apart, my peace has lost after marrying you few times in text, wen I came back in discussion she said bad things about my parents in front of colleagues so I name called her... it has happened few times in text in anger of not responding. Now wife has taken the same point in petition and applied for divorce under mental cruelty saying I have asked divorce. Should I have accept in replying the petition or simply deny it???