Oops, that adult upper front tooth really comes in between 7-8 yrs. of age. Just wanted to clarify.
It would be best to take her to a Pediatric DDS tomorrow. They will likely just take an xray & observe the tooth over the next several weeks-months & see how it responds. The idea is to keep that tooth in place until the adult tooth replaces it (around age 6). You should be careful to not give her anything too hard (ex. apple) for a while, & give the tooth a chance to firm up again. Good luck
The tooth may be tested non-vital after a traumatic event. However. the dental nerve tissue may turn out necrotic or vital after 2-4 weeks. If you can afford , you may go to a paediatric dentist for a check-up. If your child has no sumptom ever since, you may visit the dentist 2 weeks later.