Moorehead is a consummate radio actress, and even though she is not entirely convincing as a 20-something young woman here, the character that she portrays definitely does not sound as if it is voiced by a 73 year old. In fact, her character doesn't seem to be any older than the male counterpart who plays her fiancee--and the actor playing Moorehead's father seems to be much older. It all works if you just take some liberties with the script; imagine Moorehead's character (and her finacee) to be around 40, and her father to be around 60-65 (he uses a cane in the last scene, after all, and there is a reference to him being in college 40 years earlier. Not a stretch of the mind at all.