So my younger (baby )brother was about to lost in a bad friend circle. I tried to be a responsible sister and asked him / helped him to concentrate on his career and he came to uk from abroad for higher study. He finished his MSc staying with us( we are young family with 2kids). It was not a good experience for me dealing with an adult child at home. He doesnt communicate/ respectful to me. So after his study he went back and got married. Now he is pursuing his phd, and moved with us again since april without his wife. He is getting scholarship every month and I am really stressed, and cant wait to kick him out. Asked my mum to help me to have a conversation with my brother to leave my home. And its not my responsibility. Surprisingly my mum said she will not talk about it to her son. I am planning to talk to him directly though we dont talk at all..... how to say / phraise it. Avoiding any arguments or being rude... need your advice...