Sadly, it is going to be a lot of hard work to get your daughter back on track, if she is worse than the average 12 year old.  Your daughter is of an age where she is going to really start pushing the boundaries.  Something about her being so close to being an adult and yet still so far.

Structure is the key.  She needs to have a daily routine outlined, including chores homework etc.  Time slots can be used as well as a time limit for each item on the list.  This will help to teach her time management as well as responsibility.

A family meeting to get things started might be a good idea.  Sit everyone down, and if you have other children, then explain to them that the same is going to happen for them.  Make sure you include privileges and things they want on the list, so that they have to earn them or they could lose them if they much up.

Might be a good idea to have the adults of the household live by a similar chart too, so that the children don't feel as though they are being punished.

What do u mean by out of control??