This may a browser error where is reusing the cookie stored for your transaction and being used when you try to pull your wife's information.
Use the Chrome browser and clear browsing data for all time before signing into TurboTax. Then try to complete the download for your wife.
If you are still unable to download it properly, then you do have the option of entering only summaries, instead of transactions.
Here are some directions to do that: Enter Summaries in Lieu of transactions
