On the other hand ... i killed her in prologue, and then take her armor ...
That seem perfectly corect to me, yet if there will be some restriction i will mo longer be able to do that. :-/
Unless in loot will be different armor, i mean the same armor ofc, just without that "require Lae'zel" thing.
"Only over my dead body you will take the armor from me!"
I think if Laezel dies, the restriction should be lifted.