it may not be great to tell her to not play aggressive, but you could teach her to fine-tune how to do it, so it isn't a foul. Teach her to use her feet more, teach her more ball skills, and then she won't use the physical play inappropriately as much. But IMO, it's good to play physical. Later, kids that can't play physical struggle with the game when it does become more physical at higher levels, and it is one of the aspects of the game that is the hardest to adjust to. So if you teach the other parts of it, to roll over the ball, to have the good touch on the ball, body position when defending someone, then she won't have to be as physical.