The hardware is little used and rock solid. It is really just a lack of support for the x58 chipset in newer versions of Windows 10. (The issues are related to the ICH10/ICH10R storage component.)
The following generation consolidated the two North Bridge chips and has much better support.
It is likely that switching to an older version (Pre “Creators Update”.) and turning off updates would have solved the issues. (Or using a non-approved software driver.) In the end I felt she deserved something brand new. Just the speed of the M.2 drive alone will probably blow her away.
I will most likely keep the MB around for future projects. I have a twin set of components in my HTPC running Windows 7 that has been pretty much powered on for 9 years. (I was storing these parts as replacements but never needed them.)