Hummmmm.... I wonder why this is occuring now. Was OM staying with her, or she with him? Why is she now having this difficulty being alone?
I guess I'd explain, "I'm sorry sweetheart, but we're separated and separation is a time for both of us to explore ourselves and our lives to figure out where we want to be. I'd like to help you, but I really need space right now. Maybe you can go to (parents?)..."
There is no arriving, ever. It is all a continual becoming.