These kind of women are very rare (much more than men which are more prone to be sociopaths and as sociopaths are more prone to use direct violence), why would you risk this &quot;rare asset&quot; on a &quot;simple shooting&quot; that can be done by a man ?<p>If a woman had been seen the investigator would have still tried to find her even if they thought she was just a witness.<p>I&#x27;m not even aware of one known instance of a pro killer that was a woman in the last 10 years. I don&#x27;t say they don&#x27;t exist but they&#x27;re in &quot;black swan&quot; category.<p>BTW the investigators know exactly the sex and probably even the ethnicity of the killer. It&#x27;s not clear in this article, but it was said in several others that they have his ( ;-)  )  DNA, I think from the piece of the gun that was left on the crime scene.
I think there&#x27;s even some tech that allows you to make a mug shot of someone from her DNA, I doubt it&#x27;s really accurate though.