Just going to chime in with my 2 cents worth as someone who was where you were some months ago.
First do not fear separation , it may be exactly what you both need. If she wants to go then help her, any effort to hold her back will be counterproductive.
You will be thrown out of your comfort zone ( yes again ) , It will be emotional but you can use this emotional energy in a positive way and live. It is possible to be happy even when there is turmoil. There is nothing you can do directly to sway your W from her path so help her take it.
This will be difficult but it will show how much you care and it will be noticed believe me .
