"People don't plan to fail, they fail to plan."
This is a quote I got from an episode of M*A*S*H.
Later I found out it was a loose translation of a quote from Ben Franklin which goes something like this....
"If you fail to plan, you are planning to fail."
It is unfortunate that the passing of the individual was unexpected.
As others have mentioned already, that is why you should set up a will or a trust to ensure your firearms go to a Pro 2A individual(s) or entity.
I already know my daughters want all my stuff and my estate is already planned...
Just need to maintain the will / trust and my daughters are all set.
If they have a change of heart about the guns I will find out early and make the necessary adjustments.