I imagine if she's never been corrected for for forming her "a"s incorrectly, there's probably a bigger picture here.
The teacher is not BU, but as parents, you maybe have BU.
Please don't be the type of parents who never pull their DD up when it's needed, or don't correct them (in a positive & encouraging way,) when something needs pointing out.
I was waiting for my DD to come out of dancing class the other week, and there was a gaggle of 4 girls aged 3 or 4 year olds wanting to buy something in the dance school cafe. Their rudeness was horrific, and was played out in full view of their encouraging mothers, proud as punch, watching on as their little darlings barged up to the counter.
No please, no thank you, pushing in front of the other people in the queue, talking over the guy at the counte -
.
Children who have lived the first 4/5 years of their life living in such a bubble, and are never shown the correct way to do something/behave are far less resilient that their peers, and do not know how to cope when the revelation that they aren't perfect/the best comes crashing down on them.
I pity the teachers of these children, and the children themselves!