QB Issue Resolution:

Even the IRS has not finalized 2019 forms and will not do so for at least 9 months. Plus you cannot even submit 2019 W2/W3 until mid January of 2020 even if you had valid paper forms. There is a blackout period near end of December as well.

Just collect her fee in advance and put it on your calendar to process after new year’s day.

Resolution for Issue 'How do I process W2s in Quickbooks desktop before the end of the year for a client going out of business since QuickBooks doesn’t get an update until the end the year?' available: Yes (Solved).
Source: Intuit Community forum.

How do I process W2s in Quickbooks desktop before the end of the year for a client going out of business since QuickBooks doesn’t get an update until the end the year?: this issue or error code is a known issue in Quickbooks Online (QBO) and/or Quickbooks. Support for this issue is available either by self-service or paid support options. Experts are available to resolve your Quickbooks issue to ensure minimal downtime and continue running your business. First try to resolve the issue yourself by looking for a resolution described below. If it is a complex issue or you are unable to solve the issue, you may contact us by clicking here or by using other support options.

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