i laughed a little at the criticism from other moms about your grammar and typos. who really cares about this on an *informal* message board? is it a direct reflection of your ability to teach 2nd grade? hardly, we trust you passed your tests to weed out bad writing mechanics. c'mon, people! A Kiwi - " I do hope you will not be teaching my children" sounds mean, plain and simple.
ANYWAY, i recently went from being a SAHM to teaching full-time. when i dropped my son off at preschool for the first time, his teacher definitely made me feel the "teacher kinship". i'm glad that she did because i had all sorts of insecurities. i worried that she would be better with him than me, that he wouldn't miss me because he would be having so much fun with her, if he did something wrong it would reflect directly on my ability to parent/teach, etc. etc. etc. these insecurities were MINE, not hers.
maybe you are being too sensitive, maybe she's intimidated, who knows? but you know whether you are being honest about your own insecurities. start there, and the answer will be clearer soon.
ps - when you put your parent hat on, you probably hope that she's a great teacher for your son, right? any other feeling is probably your insecurity talking....