I just want to clear up a few things before the next few chapter arrive.
Bella will not die
Edward has a plan to end Tanya's madness even if it looks stupid. Can't kill a guy for just tryring to stop his pyscho ex-wife
Bella will know his reasoning before she sees him.
Don't give up on this story yet. I had to make it look somewhat like he wants Tanya to keep the two of them getting killed
