A few things~
1. Yes, Kheri deserves to die for everything he's done, but nobody else here is capable of murder like he is!
2. You'd probably think Zira should be full of hate already - but she's still young and confused, and at this point only wants to understand why Kheri killed her mum - she's still innocent enough to believe nobody can be THAT evil...and maybe he DID only say it to scare Farai, in Zira's opinion.
3. This is just the start of another huge story I have planned for Zira and Kheri, so Kheri needs to live at the minute!
No spoilers though!
And...the next few pages will be the last.
I can't believe we're nearly there!