Is it possible to sue your father's wife if she has withheld critical information about your father's situation?

My father became critically ill over a year ago. Shortly after, his wife stopped responding to any inquiries about his health, location, or situation. While I was able to get most of this information through other channels, he has now passed away and she will not release any information concerning his services or how I can pay my respects. Needless to say, this is causing me considerable distress. I do not wish to seek legal action, but I feel as though something must be done, in order to protect not only my father's assets, but to potentially protect others in the future from this kind of emotional cruelty. Do I have any potential legal recourse? Thanks in advance.