Write a letter to the tenant to be clear of this point - that no additional modifications are allowed.  

Just know if she asks for one, you will probably have to provide it, or allow her to pay for a modification.I knew two sisters who were born blind and they didn't need any modifications to their apartment.  

When people are not working, they have all day free to research these programs, apply for them, call companies for loan modification and plan their finances.

Any change in lease terms requested by a tenant because of COVID-19 deeds to be documented via a lease modification signed by Landlord and Tenant or else you risk ending up in a he said/she said situation if it ever goes to court..

Are there any modifications to the written lease?

@Kayla Truong The housing authority/tenant are asking for a modification of the lease of which you are not required to do. 

@Shane Craig we use the same color paint in all rentals;however, we allow tenants to do reasonable paint modifications if they return it back to the original color.

Businesses must make reasonable modifications in policies, practices, or procedures to permit the use of a miniature horse by an individual with a disability if the miniature horse has been individually trained to do work or perform tasks for the benefit of the individual with a disability.

I have been developing and modifing my criteria and want a spreadsheet@kenneth garrett 

I would not permit a tenant to make a major modification to my property.