Likely the agent articulated it but you can still list for whatever price you want.
Interestingly you only need the owner of the property owners permission, the next of kin, not the whole family. But for exhumation you need the whole family to agree.
So whomever was left the house, was the one who said yes,it may have been multiple people, Ie a couple of kids.
I’d have assumed they got on, becayse whomever was left the house did not have to do it, they could easily have refused after the person passed. Which indicates to me, that whomever was left the house loved the person very much, just none of them realised the implications of it.
They were likely thinking sentimentally, and not practically.