Mums will always worry, no matter how old you are. But I think she should let you live your own life now, even if it means moving out. I know what its like ... I was that daughter and now I'm that mum, though I try not to be stifling and I let my daughter do whatever she wants, I have been lucky with her though, no drugs etc. But when she is living at home, I always worry when she comes home late. On the other hand, I always encourage her if she wants to work abroad, which she has done, and hope she looks forward to coming back, whether to live with me or rent a flat. Your mum shouldn't blackmail you into feeling guilty by saying you have ruined her weekend, she should live her own life as well. I think if you move out you will be able to 'breathe' better and hopefully when you do see your mum you will have a better relationship with her. It is your life, whatever she says. Good luck.