1) ask her for a copy or access
2) get your lawyer to require her to provide one
3) get a transcript from the IRS
4) pay the IRS for a copy
Go to this IRS website for free federal tax return transcripts - https://www.irs.gov/individuals/get-transcript
For a fee of $50 you can get a complete federal tax return from the IRS by completing Form 4506 - http://www.irs.gov/pub/irs-pdf/f4506.pdf
