N.R.
This is pretty normal at this age, especially for little girls. They start developing more independence and discover they can have an opinion about things that affect them. Little girls (I think) become more opinionated and whiny. Unless you feel there is a valid reason for her change in behavior, I wouldn't give in to her new demands. Try to play a game on the way to daycare, let her take a favorite stuffed animal, tell her you'll take her to the ice cream store when you pick her up, or to a park, etc.