I cant even stand the sight of common garden snake, or is it "Gardner" snake ?
I can only imagine the horror of seeing your loved one wrapped in the coils of an Ananconda with it's teeth bitten into the chest.
I can imagine that the rush of adrenaline from the autonomic nervous system would enable anyone to grab the knife, grab the snake and start stabbing, pulling, wrestling, stabbing, pulling, until you've worn both you and the snake to the point of exhaustion or death.
I cant even fathom the strength that kind of snake has