She gave birth to her eight child in 1853. She used chloroform
as an anaesthetic. John Snow (who invented the chloroform inhaler
which regulated the dosage of chloroform in 1848) gave her the
chloroform, but used an open-drop method rather than the inhaler
that he had invented.
No evidence has been provided by the prosecution that she did
purchase chloroform. They have shown that she researched chloroform
on the computer and evidence that chloroform residue was present in
her car. The information that she looked up on the computer was how
to make chloroform.