What kind of separated is she? Did they decide on legal separation instead of divorce? (Sometimes people have religious or financial reasons for doing so.)
Is she in the process of divorcing but it is just taking a while? (My fairly simple and fairly non-adversarial divorce still took almost a year and a half because WASs hate paperwork and need time to come to accept financial realities).

I'd say it matters a whole lot if the answer is A or B.