So how do you handle it when you ask if they are in or out and the answer comes back that they don't know.

Do you then set a time by which they must decide.
or tell them that answer means they are out.

I guess my issue here is that if she has no interest in reconciling then i don't really want to sit around waiting till it's convenient for her to separate.

On the other hand if she is uncertain i don't want to force her hand.

our problem is in order to separate we need to sell the house and obviously tell the kids. Once that is done so am I