Anne was a nineteenth-century forensic scientist. her supervisor told her to conduct the crystal test for to determine if there were any traces of on glass found at the crime scene.

Forensic test is carried out for crime detection at crime scenes. It is done of items, broken glasses with blood stain, surfaces, window edges etc

Explanation:

Teichmann crystal, this is a test that is used on dried stains to determine whether or not blood is present. Dr. Teichmann made his forensic discovery in 1853. His microcrystalline test remains in use today as a means of identifying whether or not dried stains at a crime scene, on clothing or other fabric, or elsewhere at the site of a forensic investigation contain (human) blood.

that is tough

explanation: