I am so sorry about your current situation. When a spouse (or any co-owner of a property) passes away, you should update FMV for tax purposes.
In fact, I just went through this process with my own father, as my mom passed away a few months ago.
I understand what your needs are, and I can definitely assist with this. It is completely free to you, and there is no obiligation. I would need the property address to begin the process, and my turn-around time is within 2-3 days.
Please contact me at your earliest convenience.
Nicole Fedorchek, Realtor