Usar "pigheadedness" en una oración

1. Evelyn Sharp succeeded then in convincing Ingrid into getting some sleep herself, no mean feat considering Ingrid’s usual pigheadedness

2. Oh, what shortsightedness of Hindu pigheadedness!

3. And I’ll never know how or even why but somehow she always forgave me for my pigheadedness and she is in no small part the reason why our marriage has lasted as long as it has