But, it is still not right to delete ANY messages in a missing person case - no matter who you are and no matter what your intentions are.
There is the case recently of the tabloid that accessed a missing person's phone messages. At first, it was believed that they deleted a VM message; and there was a HUGE investigation into the matter. You better believe that something like this will be taken very serious.
Once the police are involved, family member have a duty to turn over any and all pertinent information to the POLICE. They should NEVER take it upon themselves to determine what may or may not be important.
My current theory is that Donnie may have even left a note behind telling WWH what happened, and she was trying to help cover his tracks. To me :moo: it is very apparent that she is NOT telling everything that she knows to the proper authorities. She is busy trying to protect her family and may be hindering the investigation in the process.