“What do I do now?” is often the first question asked when a parent, spouse, child, or a close friend or relative passes away. My best advice is when that time does come, close your eyes, breathe, and take the time you need for your memories. Stay in touch with your own feelings and well-being. Few people can think with total clarity on all fronts when a loved one dies and it is easy to become distracted and endanger yourself or others (falls or other accidents can occur).
The list of important documents to locate may be found at: https://www.bosinvest.com/blog/estate-planning/the-death-of-a-loved-one-what-do-i-do-now/