It is her choice. And I don’t think that fighting is the appropriate term in this situation. I think a better term is to say that she is weighing her odds. This woman doesn’t think that her odds of survival are high so she is choosing to end her life. I’m not saying your mother’s odds were any more or any less, but your mother took the chance with her odds. I wouldn’t call this woman brave for what she is doing but I admire that she is choosing to live her life the way she wants to live it just as your mom chose to live her own.