If interested, the software works on MS Access 2003, will work on newer versions and I can furnish what is called a Runtime software that will allow you to run the software without MS access, but you will not be able to modify the software without the full version.

In many cases long-term owners simply don't see the need nor care to unlock or modify additional use of a property, especially if they were already using it for their specified needs.

If you do allow pets, you can charge a pet deposit PLUS pet rent and would need to modify the lease to include damage to yard and clean up. 

The idea is to do a modified house hack.

I guaranty you that a judge would rule that you modified the lease by accepting split payments in cash/check/whatever, and the fact that she is proactively seeking help from various organizations will count in her favor, not yours.

You may need to modify the flow as well if the property is not functional as a single family home due to the problem with flow you refer to.

That threshold is 200,000 or $250,000 of modified adjusted gross income based on your filing status.

I have seen tons of these online, many of them are free modifiable templates with verbiage that you can change out.

Can someone with experience or knowledge help explain if I can change, modify, or terminate these current leases? 

That may require modifying the opening size, but that may be faster or cheaper than waiting for custom windows.