Bail denied against a suicide note witness in out favour as well

A family has been arrested as the bride committed suicide and left behind a note. However , there is no report of dowry claimed or physical harrasrment. D entire family has been denied bail since last six months on the grounds of suicide note. Is this really true?? Can anything be done to get the bail There has been no instance that the bride was pushed to such a last resort as suicide. The family had a guest staying with them few days before the incident happened. Even the guest had given the statement that there was no violence or harrasment of any sort