Thusha Kamaleswaran's mother said every time she closes her eyes she sees her daughter "lying on the ground covered in blood".
Sharmila Kamaleswaran told the Daily Mail: "We have to do everything for her. If she wants to go to the next room we have to carry her. I miss her when she is in the hospital. But I cannot sleep when she is here with me.
"I wake up in the night and the terrible events come back to me again. I stroke Thusha’s legs and cry. I cannot sleep. When I close my eyes I see Thusha lying on the ground covered in blood. Now I have to take sleeping tablets."