If you are going to file as Married Filing Jointly, her income is entered on Form 2555, Foreign Earned Income, not on a W-2.
See this TurboTax support FAQ for foreign earned income - https://ttlc.intuit.com/turbotax-support/en-us/help-article/foreign-income/need-report-foreign-incom...
See this TurboTax support FAQ for the foreign tax credit - https://ttlc.intuit.com/turbotax-support/en-us/help-article/import-export-data-files/enter-foreign-t...
