My wife and I have just gotten married, and we are filling out the forms for her green card. She has not yet legally changed her name to my last name so all of her documents have her maiden name on them. She does plan on taking my name, so when we fill out the paperwork, should she put my last name under "family name", or should she leave her maiden name since she has not legally changed it?

Any help/advice you can give would be helpful!!