Hey there! I am sorry for your loss. Renaming a catalog is easy, let me help you get started.
Before you start making changes, please read this FAQ about the Lightroom Classic Catalog.
Now, the name of your catalog is lengthy. The location where the catalog is stored will also have other support files with the same initial name. In the following screenshot, I have a catalog named May 2023, you'll notice other files have the same intials.
You must rename all the files that have 'Lightroom Catalog-2-2-v10-v11-v12-v13-v13-4-3' in their title.

Make sure to retain 'Previews' in the preview cache files. For example, for 'May 2023 Previews.lrdata' is renamed to 'Test 2024 Previews.lrdata'.


Let me know if this helps. Thanks!
Sameer K
(Use '@mention' to tag me when you reply)