Please stop giving those remedies that have caused the growth to increase.
Hepar Sulph is not indicated for growths behind the ear, and a repeat of 200 like this is bad practice.

I do not know of a practitioner to recommend in Singapore. If you will post more symptoms and details about your child I might be able to work out what she needs.

I am confident that an operation will not be required.

Please say first whether there are any white spots in her fingernails. Any malformation of toenails or fingernails?
Is her tongue coated? If so, what colour?
What are her food preferences/ aversions?
Any strong fears eg dogs, thunder, dark, heights etc?
Is she OK travelling in a car - does she enjoy it?
How is she with vaccinations/needles?
Was she OK after her vaccinations?
What is her overall appearance? Her build etc?
What is her nature?
Was she breastfed?
Does she have a strong smell about her?
All other health problems that you recall from birth.