Zhen fled to China a few days after the stabbing and was arrested in June 2010.
He was tried in China because there is no extradition treaty between the two countries.
New Zealand sought an assurance from the Chinese that if he was found guilty he would not get the death sentence.
Mr Mohini's widow said life had been emotionally hard on her and her daughters, Hetvi, five, and Yashvi, seven, since the trial began.
"I am trying to do my best for my girls,'' she told NZPA.
Yashvi was very upset.
"She is seven years old so she understands what is going on.''
Mrs Mohini said she was getting good support from around the country, particularly from the Indian community and even people she did not know. She said she wanted to thank them all.
"Yesterday a Kiwi guy called up and said `I am very much concerned and very much worried about your daughters and how you are coping'. I am very thankful to all of them.''