Yay - happy ending!
If you haven’t already done this, have a look at section 7.11 “Backing Up Your Work” and Appendix B9 “Backup” and B12 “Saving” in the Scrivener manual. Only a few pages. If you understand how backups work on Scrivener, next time won’t be so stressful.
Also, be sure to check out this post from Katherine for additional backup ideas: [url]Got a backup?]