Iowa Standards for Making a Report
Citation: Ann. Stat. §§ 232.69; 728.14
A report is required when:
A reporter, in the scope of his or her professional practice or employment responsibilities, reasonably believes that a child has been abused.
A commercial film and photographic print processor has knowledge of or observes a film, photograph, videotape, negative, or slide that depicts a minor engaged in a prohibited sexual act or in the simulation of a prohibited sexual act.
Even a mandated reporter isn't required to report every whining complaint of a child. They are required to report when they have 'reasonable belief' that a child has been abused..
You are correct that the counselor would only be required to report it if he believes the complaint is reasonably likely to be true.
However, given "posted 2 separate triads stating how I have hung her over a wall by her hair, twisted her arm and beat her", I would think that a reasonable thing to do would have been to at least have it investigated.
Furthermore, why did the counselor call MOM and not the person who was accused?