Beyond emotional support, if they have lost a parent or are in charge of an estate for any reason, make sure they get a lawyer as quickly as possible. Common media makes everyone aware of dramatic family battles which may or may not actually happen, but it does not cover the soul-sucking bureaucracy you have to deal with. The government is happy to drag it on beyond all reason. Even if you are supposed to give them money, they will give you task after task in order to actually pay them, they won't tell you all the steps in the beginning to hasten the process, and simply filing the death certificate is not enough to trigger the start of the timeline.