C'mon man. Don't break the system when I am trying to compromise. Anything better than Supreme (+1/+1, the Toledo Longsword) has to be custom made for the individual. The Excalibur (+5/+5) you make for one guy is Supreme (+1/+1) in the hands of another.
We may have conflicting visions of what sort of "business" Donna is maintaining. I see her as working exclusively for a single client, Andorra Covenant. Even if not exclusive, I cannot imagine where her other clients would come from.