Hello! My kitty lost a tiny bit of hair on her front leg and i would like to have an insight about it. Do you guys think it’s ringworm?

Her sister got bitten by her and she’s a bit balding since after an infection.

They both don’t go out or meet other cats.

I will take them to the vet to make sure ofc but just wanted to know if i needed to take other precautions.

Thank you ❤️🫶🏼