That website was helpful.
Here is what I found:
1. Public Charges – Eligible Persons
Service/Fees
Accident & Emergency $100 per attendance
General out-patient $45 per attendance
2. Public Charges – Non-eligible Persons
Service/Fees
Accident & Emergency $990 per attendance
General out-patient $385 per attendance
Specialist Clinc $1110 per attendance
So I imagine she was given the cost for "Non-Eligable Persons"
How did your domestic helper get the "eligable person" rate? Forgive my ignorance...
The site did define the terms as follows:
Only patients falling into the following categories are eligible for the rates of charges applicable to "Eligible Persons":
holders of Hong Kong Identity Card issued under the Registration of Persons Ordinance (Chapter 177), except those who obtained their Hong Kong Identity Card by virtue of a previous permission to land or remain in Hong Kong granted to them and such permission has expired or ceased to be valid;
children who are Hong Kong residents and under 11 years of age; or
other persons approved by the Chief Executive of the Hospital Authority.
Persons who are not Eligible Persons are classified as Non-eligible Persons.