K.H.
Every child has their own interests and mom always knows best when it comes to their child. You can always do a few trial lessons in different areas and see where she sparks the most. As an instructor I've noticed that 3yo tend to be very active and responsive to music. I have been teaching music, dance and yoga for little ones for years. There is a music program going on in Land O Lakes and you can get a free month trial if you sign up before the month is over. It is not like other music entertainment programs like Gymboree or Music with Mar, it's and actual music class where they learn songs, dance, listen to poetry and rhymes and different types of music. It is also a good intro to dance since children learn to follow beats, count and more. I can send you more info if you like.
Have fun!