I don't believe for a second Sherri was abducted from where her belongings were found.
If this was a random abduction, im surprised the abductor would leave her things where they were found so quickly, yet be able to conceal her. There wasn't really any reason to seperate her from her belongings.
If we accept that witnesses saw her jogging, maybe they also saw her heading home afterwards.
I think the police know way more than what they are saying publicly.
Many joggers have straps that attach their phone to their bicep. Perhaps she did, and they just fell off when she was grabbed.