I added some additional info to my post above while you were typing.
You can see if your attorney can get it from her, or demanding it through her attorney.
Are these joint returns? If you qualify to open an IRS account, you can download free transcripts at the IRS website. Otherwise, to order a transcript to come by postal mail takes 5-10 calendar days. Full copies of the returns from the IRS costs $50 each and takes several weeks.
http://www.irs.gov/Individuals/Get-Transcript
