The thing I think that you must do when applying the LRT/going dark... is to continue that path... no matter how long... Patience is the key.
Your MIL even said: "you cant do anyting about your relationship until your H is ready" - (If he will ever be). That is the bottom line, nothing we do or say is going to change that until they change their own minds - On their own time.
I was just waffering on my own decision to cont. the LRT myself, but I was told by many here to just keep doing it. Sometimes it takes months, or even years. It is hard. But it will allow you time to focus on you.
I understand keeping the lines of communication open in regards to kids, family, business, or sep. agreement info, (mostly any really important things you can not avoid). But if he has a OW, as long as she is in the picture... I would continue staying dark.
