Sorry, I don't know why I got the idea is was a little boy.
Maybe give her some space so that she can have some initiative. In nursery, swimming and most of the time in nursery you are told what to do, or to be quiet, to wait for your turn (even if she is quiet), . Invite some friends from nursery and let them do things quiet or messy (a tent with sheets in the living room, a spider net with some wool, ...). Give her choices. Or if she likes fancy dresses , invent some stories, role playing, give her your high heels and lipstick , and play that she is the mother and you the child, .....
Tell her you enjoyed playing with her after a play session. Praise her indirectly, by telling her she made you feel good and happy, not by telling 10 times per day that she is a good girl. Maybe she doesn't want to be a good girl who always do as told, finish her plate, never get dirty, ....what I mean is praise her for what she does, not because she did what you wanted her to do.
Of course, if she is a shy child, who likes quiet play, there is no problem at all. Why do you think she has issues with confidence?