Please review the Deputy Joseph (10644) incident report for an example of a trained officer using the term "observed" in his report.
IMO, the report appears to be the Deputy's initial interaction with the parents.
Understanding the IR will be subject to public disclosure, one should not expect the report to include very specific details as told to the investigator-- especially if the Deputy has suspicions of the witness.
Unless the investigator "quotes" the witness, in my experience, it's safe to assume the report is the investigators own description of the witness statement.
IMO, Joseph did not write "Mother
saw daughter getting dressed for school," because that's not likely what JS said to him, or he did not necessarily believe what she said.
The investigator has a duty to protect the investigation while still conveying critical information in his missing person report.
And I've read hundreds of IRs. MOO
Observation, Description, & Identification