Has your father ever been in the Service? Some people get upset about flags and patriotic things if they had bad experiences in the services. My father is like that he hated the navy cause he feels it messed up his life cause they drafted him at a great time in his life. My parents had a bad habit of giving me back my presents later saying they really dont need this anymore maybe I can use it. I dont think they really truly understand how they hurt us with the things they say and do. Try and shug it off and get to quilting you do a great job.