Griz, great to hear you tell us the details of the process and adjustment. So many others don't. I look foreward to more, much more
As far as your daughter learning English. She will learn it at the speed of light. P who I'm dating in Atlanta has an 8 year old son and was placed in an all English class. He was speaking English well within 6 months but still shy to speak it with me. Now he wants only to speak English with me and can't wait to get me on the phone to talk about everything in his life.
My Calena amiga I often talk about...same thing with her 8 year old son. He was talking to me in very good English in just 6 months.
They actually pick it up so quickly but are sometimes shy speaking it. Then they come out of their shell. Your daughter will learn and understand English much sooner than 6 months. Kids have an amazing ability to learn things like that quickly.