How can a neighbor not know where she worked, regardless of her job title, if you live next door to someone for years, see their car and, if this decal is on there, not know where they work?
I don't know where my neighbors work, but I'm sure someone does. I hope he is not focusing entirely on the neighbors. Ask their friends whether they knew.
The CIA front company the woman supposedly worked for has been reported to be an empty office, which indicates she wasn't there but AT the CIA itself.