Everything has a particular time to happen.
Similarly the tooth also erupts at a certain age .
Don't worry her tooth will come out soon by the age of 6-7 years. No need to panic that's perfectly normal. Let her teeth develop first then surely they will erupt if present.
Next Steps
Get an X-ray done for preferably and OPG to see the status of all the developing tooth.
Health Tips
Tab Calcarea Phosphorica 6x - 1 tab twice daily for 3 months this will help in development of teeth and bones.