Depending on their relationship. Giving someone grace can be also just be a case of not wanting to be confrontational. The person might not have the bandwidth to deal with or might just be in shock still so saying the non dramatic option works for them for now.If you found out your wife had a side dude and the side dude's wife killed her, would you do an interview and state how great of a person your wife was? Not too many people would give that kind of grace.
We've seen murders get hugged by their victims families so I've seen how "grace" can be more than just a supposedly good deed