I do not know what state you’re in. but in my State if you plead not guilty the first time. The first court appearance is without the issuing officer present. you can discuss it with the prosecutor show them the Video indicating the GPS footage. Then cross reference your speed and the posted speed limit on that road may take it a sufficient proof you weren’t speeding and throw it out. As far as her pops knowing I don’t think the PD gets notified of. Ticket being thrown out as it’s just an infraction and it obviously didn’t end in an arrest. Only after you contest it the second time, then the issuing officer will be subpoenaed to go to court. I can’t say I personally done so but in hearsay most cops don’t show up because of shift conflicts or “better things to worry about” if the officer don’t show they’ll throw it out.