I know what you are feeling because I had dreams like yours many times(about my mother).It comes from our mind what we see think feel when we are not asleep.that we see in our dreams because we sleep but our mind never.however it is horrible also when you wake up you need to make yourself to forget it fastly.and remember it is only a dream.it will never be what you see.As I told I have seen many terrible dreams but none of them came true.so believe that it is only the result of your daily thoughts.sometimes I also tell that I don't wanna wake up in the mornings as your mother but believe me it doesn't mean we are going to end our lives.we are just very tired.and your mother will be ok.everything will be ok.if she wants she will control everything.everybody can change her/his life.people just need strength.have a nice day and do not believe in dreams.I know you think that dreams of some people come true but it doesn't mean that yours will.faith is everything.