You can have her tested, for free, thru your local school district. Federal law requires that the school district evaluate (test) and provide treatment for any condition that may affect success in school. They accept for testing babies on thru school age. The school district will also help you with speech delays too. You can accept or deny whatever treatments you want.
In some states the office is called Early Intervention. In OR we went thru the County Intermediate Education Service District office. You can find your local number by looking in the phone book under the school district heading.
Perhaps ECI is the same program. If so I don't understand why they didn't tell you how to get a test. Federal law requires that they provide testing and treatment. My grandson had a series of tests and treatment thru the school district. He's also had testing and treatment thru his health insurance too.