Tonight my 7yo daughter started off by kicking her 9yo sister. I told her to stop, she did it more. I blocked her and she treated it like a game, running round me to kick her again and hit her on the arm, hard. I told my 9yo to go upstairs and I closed the living room door and sat in front of it so my 7yo couldn't go up. She started hitting and kicking and biting me. I gave her a warning then a consequence. She didn't care. Eventually she hit me so hard I cried out and then she started crying and calmed down. She watched some TV then at bedtime she decided to empty a cup of water all over the bathroom floor. I told her that was naughty and no bedtime cuddles now. I went downstairs because I needed some space from her. She then decided to wee all over my pillow and bed on purpose. Initially she thought it was funny and said I deserved it because I was mean and that I should kill myself. Eventually when I got upset I think she was ashamed as she hid her head and wouldn't look at me. She is now in bed asleep and I just feel completely useless as a mum. I don't know how to control her. I don't know why my daughter thinks it's ok to wee on my bed. I don't want social services involved but I just feel like no one can help. I want to go to sleep and never wake up.