As you mention above , its mean condition is not congenital.
You have already consult with your ophthalmologist so no need to worry.
though i don't doubt the diagnosis of squint
) made by your doctor as he would be in a better position to assess the condition of your child than me,
I would advice:
Continue your treatment.
Follow up when he advice.
Check for Refractive error
(Retinoscopic examination), May be your ophthalmologist done.
She is too small to surgical operation.
If she is not treated with medicine or glasses, It required surgery after 5to 6 year.
Out come is good
I hope so she will recover with medicine or glasses.
I wish your child health
Regards; Dr.Sagar Mhatre