1. If the age of your daugher is 12, look out for puberty issues and emotional issues etc (Diablo 3 Gold).
2. Your attitude is a bit on the edgy side and I understand you are tired and upset and things are not going well, and a bit "dark" in your words of the handle you wrote so maybe hire a person to take care of your daughter from time to time to give yourself a breather while you catch your breath. Though a long process, you can apply for extra help from city state to give you that important breather from taking care of child 24/7 etc.
3. Maybe a child psychologist can assist you by creating a behavior support plan for your daughter. The school is also suppose to create this, however it must be done in a dedicated way rather than a paste approach for all done by some overworked teachers or school psyc. etc. I suggest the following to be done this week.
A. Keep routines
B. Have a deal with her working on a task for 30 min and then getting a 15 min break on some kind of preferred activity such as academic web sites or art or games with others etc.
C. Set up a sticker approach so that she knows that if she earns so many stickers each week she can get another award too.
D. Praise her rather than put her down and the praise could include check in's in which you sit down with a clip board and give her check off points for the five areas she agreed to work on each day. At the end of the day if she gets say 75% of all the checks possible, you can give her some kind of reward. Time is the best reward so you do not have to buy things. Time is the gift of love (Diablo 3 Gold).
E. Hire a Special Education Advocate (google one in your area) and pay that person to go over what I have stated above and ask for more help from school district by attending meetings etc. Could be you need to transfer your child to a better teacher within the current district and you could visit such option class locations by calling a special ed. meeting for I.E.P.
F. The parent is very important to the child. Can you parent. If not, ask or send for help. If so, then try out new systems of behavior management that might help your daughter with regard for her to be a productive member of society. Can you do it. Are you up to the task or strategy of finding good in the positive things your daughter does each day. Can you praise her. It may be you are entrenched in the strategy of correcting, correcting, negative tone of voice etc. etc. etc.
G. Please consider birth control for your daughter or in the next two years you may be a Grandmother too!
Closing:
You are brave to come to this site to ask for help. The suggestions are just that and I am not a professional to give you advice so the above was all my opinions (Diablo 3 Gold).