Does the child have to live with me before I adopt her?

I am from Turkey and I went back there recently and saw an orphanage. I fell in love with a young girl who lost her parents in the Syrian war. I want to adopt her but I need to get her here to Houston where I live. She has special needs and will require almost immediate medical care, which means that I need to be able to put her on my health insurance as quickly as possible. Is that a length of time we have to wait before we can finalize her adoption? How do I go about finding a Turkish lawyer who can help me with this?