OK, NC is good. You can go along with beginning the separation if she will go to Retrouvaille and do it in good faith. The good faith part is important. She will have to participate willingly in answering the questions they ask. It's not verbal. It's all written. They ask questions that you have to think about and answer honestly. Then you exchange notebooks and talk about each others' answers. There are no marriage counselors. No one arbitrates between the two of you. You discuss what you have written in private. It works. But if one spouse will not answer the questions honestly, then it doesn't work.