Is there any way to expand individual Letters of a flattened design that have a gradient color?

I have a flat PDF design with 3 letters with a gradient applied across the 3 letters. I need to create a cut line for the vinyl printer to cut these letters out individually. I need a .125-.25 bleed to be safe for the cutter.
I do not have the original vector file or i could do this easy.
The second file is a design made by AI with intricate edges and designs. This is custom and not an easy piece to work with. It is also flat but it does have a transparent background. There is no way to recreate the gradient on this because it also has a texture applied.
I’m guessing this is something that is NOT possible because of the gradient, but I thought i’d ask you genius level AI pro’s out there.
My only idea now is to create a (-) negative offset path for the trim line. The problem with this option is that I will end up with a .25-.5” thinner letter.
As far as the custom skull n crossbones, i have no ideas. The gradient isn’t even a consistent single direction path.

