Wife is committing adultery. What is the action that I can take.

I got married apr-2017. After 3 months i come to know she is in secret relation with her colleague. I warned her and that guy but it doesn't work. Then I contacted him and forced him to know what's happening actually. Then he disclosed about their sexual relation and he has gave me their chat history, their photos when they are kissing each and their call recordings. Then I filed a petition at court for diverse on wife adultery grounds. I have sent the samans to both of them and they received. When I come through their relation by that time she is pregnant but she never stops their affair . Mentally i suffered alot.After that my first hearing date was may-20 -2017 her lawyer represented she didn't attend to court. Next date is june-2017 and she didn't attend to court not even her lawyer. Next hearing is july-18 again she is not attend to court and no information from them. It's been 90 days i have send samans to them. Still they are not coming to court. Can I take any