I have read about Lisa's disappearance almost from the beginning of the case.
Sherri is quite a piece of work, isn't she. An answer for everything.
What I found most odd, Sherri's account of why she was covered in mud and seen running by the creek in Lisa's back yard. She said she had been hounded by Lisa's friends asking about where Lisa was. She (Sherri) was on her way home (to Lisa's house that is) and saw the blinds opened by someone inside the house, she was terrified so she ran to the creek. I would think, if she saw someone inside Lisa's house, didn't she wonder, perhaps it might be Lisa, home at last??
It didn't register to her that is may be Lisa home inside "her" own property ~ that's because she KNEW it couldn't be Lisa because Lisa was dead.
I wonder if Sherri ever heard the expression, "The lady doth protest too much, methinks".