You do not need two different TurboTax desktop editions for tax year 2023. All the TurboTax desktop editions have the same forms, schedules and worksheets. So you can use the H&B edition on both computers and return the Deluxe edition for a refund.
You cannot un-activate the software once the license code has been used to install the software. All you need to do is use her TurboTax account to activate the H&B edition on your computer.
If purchased from TurboTax you can request a refund for the Deluxe edition -
Use this TurboTax website to request a refund - https://accounts.intuit.com/app/oirr
Use this TurboTax website to look up a charge - https://accounts.intuit.com/app/oicl