Will Clementine die?
First, let me say I don't want either, but I can totally imagine the writers doing something evil like killing off Lee and then Clem goes into sex slavery or something terrible.
If you kill Clem...
Just give Lee the option to off himself. Seriously.
If you kill Lee...
Just keep her safe. There's no ZA and children in this world are sold into slavery, prostitution, and all kinds of terrible things. I can't imagine what a world in a ZA world would look like. Just keep her safe.
Please & Thank you