How do I migrate my spouse to her own iCloud account?
Challenge/Problem:
Wife and I are sharing the same iCloud account (been doing this since iTunes early days) and I am tired of seeing her missed call logs, etc on my iOS device, etc. It would be easier if we each have our own, utilize Family Sharing, but NOT lose all her iPhone setup, Photos, data, etc during the process of migrating.
Goal:
Wife to have her own iCloud account setup on her iOS device but no lose all her contacts, settings, iMessages/SMS, WhatsApp backups to iCloud, iPhone app setup/configuration, etc. She will subsequently be added to the Family Sharing.
Backdrop/Current Setup:
1) Wife and have separate iOS devices
2) Wife and I share the same iCloud username and password (this practice pre-dates Family Sharing) on each device
Is this even possible and how do I go about tackling this without losing everything? My wife would murder me if I lost all her data.