Suitable divorce grounds

I am 47 years old and having an unsuccessful marriage life of 15+ years. I am working in Malaysia. A girl child is born out of our wedlock who is in grade 10th now and staying with mother. Whenever I go on annual vacation My wife voluntarily try to take out one or the other things from my mobiles and laptop to doubt on my marital affairs & make a ruckus. Her tactics to amend me in case I differ to her wish was to create a situation wherein it will appear that she will commit suicide and at times it has been a murder threat to me. My daughter was only witness for that, unfortunately she turns to be favourable to her mother. Recently she took some of my emails which is favouring her doubts on my relationship with my colleague, which she referred to all my well wishers and work place to damage my image and peace of mind. She has completely turned my daughter to send me heart breaking messages that she is not interested to talk to me or live with me anymore. My daughter was the only ground of our unity so far in our marital life. As i realise that my daughter is also against me I do not want to continue the marital life and I want to seek divorce. My wife is not agreeing for the divorce as there is no other source of income for her. Is there anyway that I can get divorced on a different ground of humiliating me amoung my relatives and child or is there any other ground applicable for a successful divorce. Also please state that whether copy of an email can act as a major evidance for them to gain a upper hand in the case? In fact she share the email with my colleague's husband and already created problem in their family too and their family life also has been completely destroyed