I strongly disagree with you. Its takes 2 people to make a marriage. She could have insisted to go with him and even when Mini was missing her Father she did nothing.
I suspect and it might come out later that he wanted het to go with him but she choose to stay behind and look after the in laws. I flatly refuse to believe that he never asked her to do so.
Hence his lack of interest in the Wedding. So you are either naive or blinded on the context that all was rosy in there Wedding when infact there was nothing there at all.
In a Marriage its takes two people to make it work not one. There are shades of grey in this Marriage which will be coming in front of Mini soon.
Can't blame the Husband if he went looking elsewhere if its not in the marriage. Gender blame is so easy when not looking at the root cause of the problem.
I find this line extremely objectionable.
If it's not in the marriage, try to work it out. If not possible, make a clean break of it and then move on!
EMA cannot be condoned or explained in this fashion. Very upset!