Yap yap yap yap. Oh sorry, that's the sound of yet another teacher who loves the sound of her own voice. Yes, I only witter on for my own benefit, I have nothing better to do do I.
Anyway, I can only hope that you don't expect much respect from said teacher if this is what you show her. And bizarrely, I also have transferred from a profession known for its 'bullshiing' (I am secondary though, so the teacher in the OP is not me!), it might be worth noting that this involved a substantial pay cut...all because I wanted to work with young people and do something worthwhile. Being spoken about in terms such as 'PrincessParty's certainly would make me reconsider my chosen vocation. I presume that you would be an expert were you to be in her shoes? I would rather an enthusiastic teacher who stops teaching on time and enjoys talking to their pupils to one who can't wait to get rid (though it would not surprise me if coincidentally, throughout your childrens' school career, they encounter more than the average of the latter).
I am frankly amazed that anyone would show so little respect for someone whose sole aim in work is to impart knowledge and care to your beloved children, what an odd attitude! I can only assume that you do something of equal 'importance' to give yourself such airs and graces and feelings of superiority. I suspect you would be the first to complain that your little darlings were being shortchanged were you to find out they were being allowed to finish 10 mins early every day, or watch a DVD instead of work, extra teacher training day etc etc...ironic.
I don't recall, did you say whether you had tried speaking to the teacher politely, respectfully beforehand? She might well have let your children pack up 5 mins early anyway.