Very fruatrated.. what do I do?

First she's a toddler, it's normal. Second, you must discipline her, you are her mother, it is your job. Put her in time out for 2 mins. Yes they run, they have just learned how to do it. If she throws a fit then it's time out, if you do not start disciplining her it will only get worse. And she throws those fits becuase it gets her what she wants, be strong and do not give in to it.