Why does my mom do this?

Aww... im in trouble too... don't you hate it when they won't let you talk! and when you raise your voice slightly to be heard all of a sudden your screaming?! LIES!!! Then she goes with the same old routine"I do every thing for you BLAH BLAH BLAH!" Ahh IDK sometimes it's like she looks for problems... It's not my fault! GEEZ! I have every thing taken away from me now and the only way im answering this is cuz she let me have my mouse back for homework...Shh!