This is very interesting.
I see it as "us versus them" approach/mentality.
Two communities - locals and foreign expats - keeping themselves to themselves.
It seems to me
as if the locals treat this tragedy as specifically expats' matter
because there had never been such crimes there
for over half a century before.
Also,
let's not forget that such rural small communities still tend to be quite patriarchal.
And here comes a successful woman,
with the air of authority about her (as reported)
running a lucrative business.
A female and a foreigner.
Somebody might have been really disgruntled.
And suddenly triggered to commit the murder.
Hmmm...
But, of course,
my imagination might be running overtime....
Again...
JMO