I'm sorry you're having such a hard time
It does sound like you are being discriminated against. It sounds almost like you are dealing with a bunch of xenophobic idiots.
In any event, I cannot give you legal advice. However, what I would do, is I would contact a lawyer in your area that works with immigrants. Someone who speaks your language would be perfect.
I recommend this strongly because if you were a natural-born citizen, you would have more rights. They are acting like idiots, and you need a strong advocate who understands the law in your corner.
I really cannot stress this enough. Get in contact with someone in your community who knows a lawyer or someone who understands your language and culture, who works for free. These types of services are present in just about every major city.
There is much proof that liverflush helps tremendously, and your daughter having less pain is proof of that. But you definately need LEGAL assistance to prove your case.
You need to INSIST that your daughter is being cared for and that your methods are WORKING. The proof of that is her not having anymore pain.
Don't give up; stand your ground, and get legal assistance.
God bless you and I pray that God will grant you wisdom in this situation.