Why wasn’t the life insurance policy that LS took out on Gannon discussed further in the trial?

If memory serves me correctly, i didn’t hear anything about the life insurance policy letecia took out on gannon a couple of years before she killed him.

Why wouldn’t this be mentioned in the trial? Isn’t that a major indicator of motive?

*PS - i’m not 100% certain it wasn’t mentioned at trial i just don’t remember hearing about it at all.