The article did not state that her parents went to the coaches' house to show them anything. Please don't spread any rumors until confirmed.
Read the USA Today article by Christine Brennan starting paragraph 4 - the timeline indicated on Dec. 3, 2017 the pictures were sent/received and by paragraph 6 “Zimmerman and Fontana, who are married to each other, were made aware of the photos in a meeting with Dispenza at their home that evening, the girl and her parents said.” It was inferred.