no, the car really does ride harsh. the mammary support device is more than sufficient
The car was set by Ford at the factory to ride best with 5 passengers in it and a full load of cargo. with that much weight in it, it does ride better. it's a problem with the stock shock absorbers. not just the GF but other passengers - guys from my shop who are used to riding in cars with coilovers - and the ST is harsher than coilovers from the factory.