There's a big difference between the two options? Very odd wording. Either at the dump site or somewhere else, and if it's somewhere else then it's the home??? Hmmm.
I think the police are trying to say in a very vague fashion that they feel she could have been killed at home. It's to put pressure on someone.
Telling the islanders to be careful means nobody on Bute is going to act normal until this is solved. Again more pressure for the suspect.