Russian Tortoise Shell

[Plamax]

Hei people, I have a little russian tortoise. She is about one and a half years old I believe. However, I have her for about five months only.
I started noticing some strange patterns on her shell, so I am wondering if it is normal or not?

First two pictures from when I got her and others two - now. (Marked some spots in red for comparison)
Does not really looks like a shell rot and hopefully it is not. Perhaps something to do with diet or temperature / humidity conditions?
I can post more info and/or pictures of of her or her habitat if that helps

 

[Sarah2020]

Looks like normal shell growth. The tiny curls are part of the growth and I get them on my Russian. I soak mine 3 times a week as that helps with hydration and also rub in coconut oil to help moisturise the shell. Read the care sheet to check, heat, light, diet and enclosure etc...