Slightly different situation, but my birthday is in September which means I did 5 terms of reception. I always thought it was the best thing ever as I do feel that that first term (in your DDs case first two terms) helped me to settle in and learn the routines of school and then I was more than ready for the academic side by the following year (if not before). School was always easy for me and I loved it. I don't think your DD will be teased. By the time the other kids really notice she is older they won't care - she will just be one of their friends!