So how should I interpret your statement then?
in the way it was intended - they can treat the contributory factors (HLS layout, markings, lights, procedures etc) but the pilot made the mistake so you can either rebrief and retrain her and accept she had an off day or, in extremis, you can take her licence away, but you would have to demonstrate additional failings and prove professional negligence to justify that.
She made a mistake and the cost was only (fortunately) embarrassment and two trashed aircraft - I don't know if she got to keep her job but I am pretty sure she will be super-careful in future.
None of the measures recommended or actioned will prevent another pilot from making a mistake - they will help but they can't cater for an error in judgement.
Hence my assertion that the prime cause of this accident was pilot error which could have been avoided with a little extra care.