I noticed Mr. Hileman was attempting to talk about ground penetrating radar and her archeological experience in terms of peer reviewed articles concerning her procedures. Shades of junk science!
However, the fact is that GPR found the body and people trained in archaeological studies used tried and true methods perfected over hundreds of years.
She explained the dirt situation (layered vs. excavated/mixed) so well, even I understood the common sense on which it is based.