First of all Jessica, welcome to the site.
Listen, it's not a matter of you going in and saying "I need a nice, more compationate teacher for my baby". It's a matter of fighting for your daughter's right to be educated in an equal manner. If you truly, truly believe that this teacher is not going to be accomodating to your daughter's needs, that your daughter will not respond to her style of teaching, then you do need to address it.
But, you have to make sure that you have concrete examples as to why this is not a good placement for you daughter. You have to show history of what has been successsful in the past.
What about accomodations and modifications in the classroom? Are you able to think of things that may help your daughter without removing her from this teacher? Do you know that there is another 2nd grade teacher who will "mesh" better with your daughter?
Listen, in all honesty, changing teachers at this age can kinda get you in trouble. Unless the teacher is showing an absolute unwillingness to work with your daughter's disabilities, she should stay in that classroom. An IEP can be changed and modified quickly now. It may be a better approach to address why your daughter is being challenged in this classroom and what steps can be taken to make sure she does not fall behind.
There are always going to be teachers in her life that are more set in their way, a little toughter, a little less understanding - trust me, I've been there. One thing I have found that works is meeting with the teacher one on one. Not approaching the meeting like a mama bear, but rather a partner with the teacher in the child's successful education - sharing some insights into where there have been clear problems or failures in the past, sharing some things that have been of help in the past, sharing your daughter's disability/diagnosis, asking the teacher what she believes will be helpful for your daughter. Share your concern that she is falling behind and you are very concerned that this will set the tone for the year.
I would always suggest a direct approach first. If this meeting is ended with your feeling that the teacher is unwilling to support your daughter's needs, then call the IEP meeting, or if you have a good relationship and feel the administration is willing to work with you, meet with the principal and share your concerns.
I hope you are able to resolve this issue with as little change for your daughter. Hopefully the teacher is able to respond to your daughter's needs and she won't have to be moved. However, if it is affecting your daughter's ability to learn and her opinion of yourself, you have no choice but to deal.
Again, welcome to the board.
Sharon