@chickey Welcome to Mayo Clinic Connect. I was formally diagnosed with multiple myeloma earlier this year, and am under a wait-and-watch plan, although we may be starting treatment come March 2021.

Here is the link to an article from Mayo Clinic, on multiple myeloma, that will give you some great information: https://www.mayoclinic.org/diseases-conditions/multiple-myeloma/symptoms-causes/syc-20353378
Also, the International Myeloma Foundation has a lot of information, and has a packet of material they will send out to you: myeloma.org

Is your wife's first treatment modality stem cell transplant, or another type [chemo or targeted radiation]? You can check with your local cancer clinic, and get the names of the care team, that will include a patient advocate and social worker. Let them assist you with questions and concerns you and your wife have. It is a great you are there for her! When you said her protein was off the chart, what protein was that? Have there been any other diagnostic procedures done?
Ginger