yes - she needs to TWIST the tooth instead of just pushing it back and forth.
Don't worry - she has a good couple of months before you need to worry. However, she needs to REALLY keep it clean in between the teeth, where the new one is coming in over the baby tooth. If she doesn't brush really well she can get decay on the adult tooth and it will be on the FRONT side of the tooth, which will be unsightly.
My daughter's dentist gave her like 3 months to get the baby tooth out. Just tell her to work at it every day all the time whenever she thinks about it.