I thought about those pool supplies as well as testing sample of hot tub water. Was she washed down with chlorine bleach? And/or drowned in a bath tub? There has got to be chlorine of some sort found on her, in some concentration, imo. The smell of chlorine on the skin is sometimes evident on skin even after a shower if you swim in a super chlorinated pool
That was my thought as well. Bleach or a strong pool Chlorine solution was used and that's why HRD dogs weren't. IMO