I need advice. My sister and her 3 kids moved in with me two months ago. I have 2 boys. 4 and 1.5. I’m having a hard time because her kids are so disrespectful, constantly fighting and hitting and cussing and it’s starting to affect my kids. My 4 year old has become the same and even started cussing at me and bullying his little brother and I don’t know what to do, i hate that my kids are exposed to their violence and behaviors my gentle parenting and sweet boy has gone down the drain. Her kids are completely out of hand and my kids are starting to model their behaviors. Plz help🥺