Thank you for your query.
The following details would help the doctor in coming to some conclusion:
1. Gestational age
of your daughter at birth.
2. Birth weight.
score at birth.
4. Any difficulty during birth or was resuscitation
5. Any illness to the mother in the first trimester of pregnancy?
A premature and/or a low birth weight
baby can have delayed milestones. Apart from this any illness does delay the developments slightly.
Vaccinations usually do not cause development delays. Even if vaccination was the cause then the development till the vaccination should have been normal. A proper record and assessment of the child is required to come to any conclusion.
I hope I have answered your query to your satisfaction.