My mom's friend is living at my house now for like 3 weeks help!!!!!!?

its so anyoing she usis our house like its a hotell * im 15 and this girl is 18*......its so anoying first she lets my nephew AND his baby and his girl friend stay here for like freaking 9 months! so they finaley left but now shes letting my nephew's x * witch is the girl imt alking about*stay here to help her out with all of the house work * she wont let me help for some reason* and this girl has a baby * the other babys sister becuase my nephew broke up with this girl* so yeah now im stuck here with her for 3 weeks! or more.....i cant take iti just want to leave * i know where i want to go but its perosnul* but yeah does any one else's mom do this stuff? i think its stupid....ITS A HOUSE! NOT A HOTELL FOR THE POEPLE WHO LIVE PATHATIC LIFES AND BEG TO STAY SOMEWHERE JUST BECAUSE THEY DONT HAVE THERE OWN HOUSE ITS THEIRE OWN FOUGHT ANYWAYS * im a dude btw*