So recently my parents split, I moved into a new house with my sister and mom (because the apartment was too small for my dad, brother, and I (both my brother and I are 18 and go to a local university).

Sadly things have become very annoying at my household, my sister holding all the power above my mom and I, telling us to clean (when everything is clean, i'd show a pic but that's private). Always tells us what to do and complains when she doesn't get her way.

Though I have put some RP examples to use and it has worked, but she still has the upper hand between the 3.

How do I take control back into my mom and my side of the household, because we are both sick of it!