I am so sorry about the loss of your beloved Lacy.
It is disgusting that law enforcement or the humane society hasn't returned you call for help. That just adds insult to injury.
Was this dog caretaker licensed or insured? It may be possible to make a claim against her insurance carrier.
I've been racking my brain for ideas that might help you. I think a Facebook page focusing on your quest for information and justice would help bring attention to this, and embarrass the law enforcement to actually do something.
I would also suggest a petition on change.org
I would also suggest speaking to the veterinarian Lacy had if it is possible to do forensic DNA identification of any of the contents that were mailed to you. There is a company
founded by veterinarian, Kay Halverson that specializes in pet DNA Forensics. They have worked with law enforcement many times. The company is QUESTGEN in Davis, California.
You could also consult an attorney specializing n Animal Law to sue this woman for damages.
One thing that struck me immediately upon reading what happened to you and Lacy, is where are the complete remains
of Lacy? This situation is just unconscionable. This woman has to be a monster to send you a package like that. I am wondering if this psycho has done this before, or if she a history of stealing dogs and then reselling them.
I am so sorry for the trauma and loss you have suffered.
Please let me know if I can make any calls for you, or others inquiries to help.