Speaking as one who has dealt with families bereaved by suicide for over 23 years so, briefly ... There is no 'normal'. It is often the case that once a person has made the choice of suicide - they appear much happier and calmer. Families say, "Ten days ago, we thought he'd turned a corner as he was getting back to his usual cheerful self and then ..." I recall one man who visited his parents for the weekend, cleaned the house and mowed the lawn and then hung himself.
Suicide is outside our expectations and so 99.9% of people are not looking for it and do not see it coming. When they look back at the recent months? Then they can see the path leading to it but it was not visible before.
If this is suicide, could the person have been waiting a week (or more) for the correct opportunity? Yes.