It sure doesn't sound like it would apply, as it doesn't meet any of the exceptions:That happens to be an exception to the hearsay rule. If the maker of the out of court statement is dead (or otherwise unavailable), the statement is admissible. But SS's knowledge isn't necessarily confined to something GR said. She could testify from personal, direct knowledge that he never sold it.
Hearsay Evidence - Definition, Examples, Cases, Processes
Hearsay defined and explained with examples. Testimony based on what a witness has heard from another person, of which he has no personal knowledge.
legaldictionary.net
Edit: My apologies. I'm allowing myself to get upset, about things that don't involve me at all.