If my Father was in horrible pain and he asked me to help him...I'd be a murderer too. Now, that being said, I'm not getting into it with you again. I think we know from history that we're just not friendly adversaries. Say your peace, and then we're done.
If you held a pillow over your father's face after giving him a non-lethal does of morphine in a botched attempt to kill him, then I guess you'd be in the same league with her. Not quite. You'd also have to disconnect your brother's respirator real quick before he could regain consciousness after a brain injury.