Re: Looks like my hive requeened itself, leave it or replace
Your info is confusing because you say you wonder if the killed the new queen before it was released, but elsewhere you say they did not eat the candy to release it.
There is also no time frames given so it's just not possible to know where your current queen came from, or wether it's mated.
So the best guess I could give would be leave the current queen 3 weeks. If she is still not laying eggs then she never will. Do you have other hives you could transfer brood from?
"Thinking Inside The Box"