I don’t remember please help

This is an older movie, I believe. The scene that I remember is, there are 2 women…a mother and daughter. In a kitchen. The younger woman is preparing the older lady for life after her death, by suicide. She feels that her life has been useless so she plans to commit suicide and is telling the older lady information that she will need to know after her death. The older lady is pleading for her not to commit suicide and trying to give her reason to live. The younger lady goes into another room and shoots herself. The last thing I remember is the older lady on the phone telling someone what happen.