Hi there Ben,
When you do the "tax interview" with TT online, it should be able to accommodate a foreign mailing address. Separately you may be asked which states you lived in during the tax year - choose both "foreign country" and whatever other state(s) your wife lived in during 2014.
When you're entering all the figures, make sure to fill in the sections labeled "foreign earned income exclusion" and "foreign tax credit". Those topics have been extensively discussed on this board, so your best bet is to have a look through the archives if you're unsure how to answer the TT questions.
I agree with guya's comment, your wife will need to wait until she has spent 330 days outside the US before filing Form 8965. I'd suggest you get an extension of the filing deadline until October - you can do this quickly, easily and automatically through TT. But make sure your wife has made a payment to cover any tax she owes by April 15th, otherwise any amount due will accrue interest until it is paid.
Best of luck!
