Would it had been better for her to never stop being shy?

There is clinical research that supports the theory that "shyness" is at least partially an inborn personality trait, although it can be influenced by factors in the environment, like a child's family, the parenting style of their mother, father, and/or primary caretakers, their opportunities for socialization with other children, siblings, and adults, their school experiences,birth order, etc. Shyness is not a negative trait per second, however it is generally thought that if it is extreme, a child may suffer acute anxiety and worry, which may impede them from forming positive social relationships, and can carry into adulthood, thus increasing the likelihood of fitting in at work or even finding a career or job that suits their personality. Ironically, a significant number of actors and even comedians report being shy, which shows that a person can learn the necessary skill set to overcome their innate shyness for the rewards they find in acting as a character or extension of themselves. Of course these same coping strategies can be used by others who are interested in professions such as sales or even teaching, that require significant interaction with and attention by others. It is common for people who were shy as children and adolescents to describe themselves as being so many years later, even though perhaps few people except those who know them best to guess that this would be true! As far as "pushing" a child to overcome shyness; the issues of media and public intrusion into the lives of people in the public eye unfortunately happens whether that individual is shy, outgoing, or falls somewhere in between.