I have just been using newspaper for years, Dark. It's easy to clean and saves time. I lost my first leo because she got impacted from being on bark. Of course at the time being a newbie I didn't know alot about substrates. I do remember being heartbroken at the time though.
Fortunately for you, you have this forum to find out these things. You can always put her on newspaper until you get the info that you need and be on the safe side.
Why are there braille dots on
the keypads at drive up ATMs?