I was told my daughter has dyslexia?

I was recently informed my daughter has dyslexia she is 7 yrs old i however am not totolly convinced as she has had a lot of school moves we moved from england to republic then from the republic to northern ireland my daughter has always been behind academically only this last school is a dyslexic accredited school i had no idea my daughter was dyslexic until teacher told me a few of her findings my daughter writes back to front , she struggles to read and writes as she sees it all squashed together no spaces , instead of reading the words my daughter studys the pictures and reads back to you through the pictures cover the pictures she is totolly lost we recently gave up the ghost on the days of the weeek months ect as this was proving a task and a half im not fully convinced this is a correct diagnoses as my daughter may just be suffering cos of the school moves does anybody have any insight to child dyslexia please only respond if you know about dyslexia as this is a serious matter to me the teacher is a accredited dyslexia teacher who has trained i know nothing about dyslexia and dont really want to tell the teacher i think shes wrong until i know a bit more about the problem