I am sorry to hear your news.
Your DD will have been wholly educated in English, speaking it at school and with her friends, reading books in English and - presumably - watching TV. A panel is likely to conclude that she has had much the same exposure to the language as a child growing up in an English family. It might possibly make the difference on a score of 119 or 120, but it is unlikely to win the day on 114, so you are going to need as much academic evidence as possible.
Regarding the August birthday, you might like to take a look at my earlier reply to adoreableade, here:viewtopic.php?f=35&t=23177