last will and testament

How to handle a sudden death with no will
Q. The husband of my neighbor suddenly passed away at 68 without leaving any will, trust or even informing her about the finances. She is also in her 60s and is completely perplexed at what to do. They are well off financially. She has no idea where what is and is asking for help. What is the best way to help her?
Is that will still valid if you move?
Q. As a follow up to the story you did about what happens when an estate goes to probate, what happens if a will is prepared when a person is the resident of one state and then moves to a different state? Is the will still valid?