Debbie and Eric, I am so sorry that your MIL passed away, but thankfully, she didn't linger and is no longer struggling. May she Rest in Peace.🙏 I do so hope that Eric will be able to join you on your cruise. Any and all paperwork and documents can wait until you come home from what I hope will be a relaxing and stress-free time for you both to decompress.
When you mentioned that your MIL's papers were under her mattress, reminded me of when Jim's elderly aunt passed away back in the '70's; my MIL found money everywhere hidden in many places, starting with many pocketbooks. I'm talking a lot of money!!😉
Hugs to you both. To Eric's brother, also!