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Is there a reason you are dismissing the "only main suspect" from your theory of the murder? How do you know £10 fulfilled his wants, not his needs?
Absolutely a valid reason! Not yet concluded definite motive.
he raped them or wanted to rape - physically desperate. (Not proven)
Trustworthy family friend handyman had a easy access to her home he could very easily steal jewellery/ valueless. ( his monetary needs/ wants , lifestyle , mortgage status had not been assessed)
If family friend handyman is a murderer, his criminal thinking should be prove by checking his past criminal records, and presented to the court & jury.
All of a sudden no one can make a mood to murder people, unless a person is mad or criminal minded.
she was drugged( what was the level of it)
time of death not disclosed.
this case theory has very confusing theory , he needed jewellery, want to rape ,want to kill etc etc. And objective is still not clear..
he could be the “ only main suspect” reason , he knows them , he had easy access to their house, familiar to their routine , he came in CCTV , he brought things for her ,wine of her choice, 10 hours in the house , etc etc.
Everyone knows what will be the police initial thinking, basic patterns very well and look Only one person was part of this investigation. All the Situation was roaming around him only.
My independent opinion So many flaws of investigation .