Sounds like she may have been out walking or jogging. Wearing a souvenir shirt Did she have her phone or wallet with her?
“She either fell in or was pushed. “
OR JUMPED!
She had left her phone, pocketbook, car keys, etc. in her apartment, which is typical of a suicide. They found her body in shallow water and she had some slight bruising in the throat area, although not enough to strangle her. But this is why they are reopening the investigation.