Hi Melissa,
I am afraid no direct way exists to move a purchase from one account to other. However, contacting XBOX PC Support may help you since this is a user-to-user support forum.
Please go to https://support.xbox.com/en-IN/contact-us
Please click the Contact us button.
I hope this information helps. If you have any more questions, don't hesitate to reach out.
Otherwise, please take a moment to rate the answer. Wishing you good luck!