Dolly Parton<\/strong> has thrown herself into work in the wake of her husband Carl Dean<\/strong>\u2019s death<\/a> and friends fear she\u2019s pushing herself too hard.<\/p>\n \u201cDolly simply will not stop \u2014 she\u2019s hardly taken a breath since Carl passed away,\u201d a source tells Examiner.<\/p>\n \u201cEveryone has been begging her to slow down, but her answer is that Carl would want her to keep working, because it makes her happy,\u201d adds the source. \u201cBut it\u2019s very clear she\u2019s struggling and hasn\u2019t given herself time to grieve.\u201d<\/p>\n The country music legend, who made an appearance at Dollywood less than two weeks after losing her husband of nearly 60 years, told Today<\/a> in May that having her businesses to focus on has been the \u201cbest thing that could happen to me.\u201d<\/p>\n Courtesy PR<\/span><\/p>\n Parton, 79, has been keeping herself busy with the theme park, her frozen foods line, a new book<\/a>, a Broadway show<\/a> based on her life and an upcoming Las Vegas residency<\/a>.<\/p>\n \u201cIt was only a matter of time before she got sick,\u201d the source says of the \u201c9 to 5\u201d singer, who was forced to cancel an appearance at Dollywood on Wednesday, September 17 while fighting an infection related to a kidney stone, per Taste of Country<\/a>.<\/p>\n \u201cKidney stones are terribly painful but she will recover. The worry of course is that she won\u2019t start taking care of herself going forward,\u201d adds the source. \u201cShe may think she\u2019s invincible, but she\u2019s not.\u201d<\/p>\n \u201cIt\u2019s in her nature to push through hard times and keep smiling, and everyone admires her strength,\u201d continues the source, \u201cbut at a certain point it becomes very unhealthy. Her friends worry that she\u2019s going to work herself into the ground.\u201d<\/p>\n<\/div>\n<\/span><\/div>\n