Cheating Husband

It sound funny but rather this is what happened to my friend. My friend husband is a person with high status; meaning that working in a foreign country as a diplomat or so. Been a diplomat, you are usually attached to your people or people from the country you come from that sometimes you invite them to come to your house for dinner or so. There is one nun who usually comes to my friend's house and of course being a nun it is really hard for her to suspect anything might be going on behind her back but guess what; the nun is cheating with the husband. Two days ago, the husband was not feeling well, he left his phone unattended. When the wife took the phone, she got curious because the message that was written was from the nun, to check it out; it was very romantic in deed, how sweet honey, I miss your touch and so on. The wife confronted the nun about it and guess what; the nun said, thank you, God bless you. What? What do you think the wife should do now? She is really confused.