Her father loved her more than all of his things.
This does tell me that her father loved her, but isn't it much more convincing when you tell me what those "things" are? For example:
Her father loved her more than all of his antique books, his job, his electronics, and all of his precious stones.
Sometimes it's harder to replace than that, but I encourage you to avoid using the word "thing" when writing. There is always a better way to describe an idea or object (I was about to say "something" instead of idea or object!) than using the word "thing".
Hope that helps and have a Merry Christmas!