<text>  A Los Angeles attorney and single mom who is battling terminal lung cancer that has spread to her brain is launching a campaign for the right to end her own life, in a case that echoes that of Brittany Maynard. Terminal: Christy ODonnell, 46, is battling lung and brain cancer and now fighting to die with dignity . Christy ODonnell, a former police officer, says she has exhausted all her medical options in her battle against Stage IV lung adenocarcinoma, which has masticated into a golf ball-sized tumor in her brain. Despite surviving the six months life expectancy she was given upon being diagnosed last June, the 46-year-old has been told her death will be painful, as her lungs continue to fill with fluid that will inevitably drown her. I think its a terrible injustice that I dont have the choice to die in the manner I want to and instead that Im forced to very likely die in protracted pain and I might even die alone, ODonnell told People magazine in a new feature. ODonnell is now using what time she has left to support a Death with Dignity law in California, having been inspired by Maynard, the 29-year-old California woman who moved to Oregon to take her own life last year, ending a long battle with brain cancer. ODonnell says she wants to be able to do the same in the bed of her home in Valencia, with her 20-year-old daughter, Bailey Donorovich, holding her hand. She says her greatest fear is that her daughter will come home one day and find her mother dead. ODonnell said she went to the doctors last year after waking up one morning and not being able to read properly. A big book worm, she had been reading before going to bed the night before, only to wake and hardly make out the letters of some words. She had her eyes checked, but the results came back fine. ODonnell then called her physician and explain what happened, and the doctor told her to immediately go to the emergency room. Legacy: Brittany Maynard, 29, moved from California to Oregon - one of five U.S. states where terminally ill patients are legally allowed to kill themselves - to take her own life in November . An MRI and some other tests confirmed her shocking diagnosis. Bailey grabbed my hand and I just started crying and said, Im so sorry, ODonnell told People. What I was really saying was, Im so sorry Im going to die and leave you without a mom. ODonnell underwent chemotherapy and has taken part in numerous clinical trials. However her prognosis has not changed. There is not anything medically we have not explored, ODonnell said. So it is not like I havent exhausted all my options. My opinion is an informed one. Doctors say the tumor in ODonnells lungs causes fluid to build up. She will soon have to undergo a painful procedure to empty the fluid, however it will fill up again almost immediately. Theres a good likelihood my daughter will come home from work, come home from school, and find me dead, an overwhelmed ODonnell told People TV. In memoriam: Three California lawmakers are promoting right-to-die legislation with the family of Brittany Maynard pictured with husband Dan Diaz, a terminally ill woman who ended her life early under Oregon law on November 1 . Love: Brittany Maynard and Dan Diaz married at the Beltane Ranch in Californias wine country on September 29, 2012 . ODonnell is now hoping to fight not just to stay alive until Brittanys 21st birthday in June, but for the law to allow her to die the way she wants. In the short amount of time I have left, I want to spend it with my daughter - she and I are doing this together - and I want to speak out in whatever way possible to start that dialogue with the public, with the legislature and the courts, and try and impact change, ODonnell said. ODonnells case is incredible similar to that of Maynard. Her family - lead by mother Debbie Ziegler - are now trying to pass a bill that would allow terminally ill patients to kill themselves in California with drugs and dosages recommended by a doctor. The practice is legal in five states, including Oregon, where Maynard moved before her suicide on November 1. Hoping for change: Debbie Ziegler, the mother of Brittany Maynard, speaks in support of proposed legislation allowing doctors to prescribe life ending medication on Wednesday January 21, 2015, in Sacramento . The 29-year-old San Francisco Bay Area woman had made her case public with online videos, saying in clips that were viewed tens of millions of times that she should have been able to legally obtain life-ending drugs in California. Most Californians would not be able to do what we did, Ziegler said. They couldnt leave their homes; they couldnt leave their jobs; they couldnt leave their families, their friends, their pets. We had to do all of that. It added another layer of pain. Maynard wrote in her final Facebook post: Goodbye to all my dear friends and family that I love. Today is the day I have chosen to pass away with dignity in the face of my terminal illness, this terrible brain cancer that has taken so much from me ... but would have taken so much more . 