I can't stand my SO's daughter and her mother right now. She is always throwing an attitude at me…

I can't stand my SO's daughter and her mother right now. She is always throwing an attitude at me the last couple days, getting mad when I sit next to her, not listening at all, taking the couch pillows and blankets from me. She'll get mad and throw a fit at me when I tell her she can't do something. And I can guarentee you she's getting it from her mother.