Doctorate with no affiliation submitting to a publication with an undergrad co-author
Your affiliation could be &quot;Independent Researcher&quot; or similar, though blank might be allowed.
The other person may require permission from the company to name them, even though permission to publish has been given. It is best to check.
But your listing seems to imply that you both are affiliated with XYZ, which is not the case. You probably need to clarify that.
And yes, her degree can, and probably should, be listed. Use whatever the diploma shows: BS, BSc, ...