Can my spouse of 19 years file for citizenship if we are separated and if so, how do we go about filling?

If your spouse is already a claim lawful permanent resident status for more than five years, then she can apply for naturalization. However, some applicants have violated the terms of their permanent resident status. As a result, I strongly recommend an appointment with a competent experienced immigration attorney before she files a naturalization application. There are a number of ways that people can disqualify themselves get into trouble when they file as a result.