I’m not worried yet. Signs of a struggle are totally different from physical evidence in most respects. A suffocation, strangulation, or any sudden death may not show signs of a struggle if the person had no idea they were about to be attacked. Signs of a struggle might be an overturned table or chair, broken glass, etc. Physical evidence may be blood, fingerprints, saliva, semen, a fingernail, a computer, a cellphone, etc.
AM indicated that LE did remove evidence from the home. That’s why I’m not worried yet.