Friends problem with cheating husband

My friend would like some advice. She is not much into using computers and allowed me to post on her behalf to get some advice.

She has been married for 3 years (arranged). No kids yet. Things were normal other than usual small fights. she lives in same city as her parents, and goes to her parents place 2-3 times a week to help out in business.

Then she saw his mobile chat with his college friend. She lives abroad now and has 2 kids.
From last 3 months they are chatting. Its romantic chat. She was shocked. She confronted him. He said sorry. But continued chatting. She found out again , again confronted him. They had heated arguments. This time he dint apologize. He got angry and told her that he will continue chatting with that girl. And now he changed the passcode of his mobile so she cant even open his phone.
She is very upset and now at parents place for the day.

What should she do since he is now not even apologising, not feeling sorry.
Should she confront the other woman and/or her husband ? She is ready to talk but the husband is in no mood to talk and rather bringing up all bad things about her in their fights.
She even said to him she will help him forget the other woman, things happen we make mistakes, but he did not say anything.

please advice.. thanks,

 

Well the other lady has much more to lose. Thats why shoudnt she confront the lady and tell her to stop ?? This may work?

 

She messaged the woman and told her to stop chatting and the woman said they were just friends and now they dont chat anymore.Then her husband now called her up and said you come home .. He was very angry. Now ofcourse this woman must have told her hisband about her confrontation.. Shes afriad to go home now he is such a loser first doing this and now blasting her

 

No shes not working . Her family
has a well running business in which she helps.
She has told all to parents now . Parents will do the talking.
Hoping that he comes to his senses..