Caramel has always been an indoor cat and She has been trained to poop and pee in the toilet since she was little so if you want to train her to poop and pee in the litter box you can but I don't know how long it might took her to actually use the cat litter as I never tried to make her use the litter box before
Things caramel like/dislike
She likes box, she isn't picky with Food she doesn't like when it's shower time unfortunately hahah she likes to be pet but she can sometimes bit or scratch you when it get too overwhelmed, she like to catch bugs especially the cockroaches since it's the easiest she can look for, if you have a balcony she usually sit there or sleeps there as it's her way of getting fresh air.
She can get along with other cat's though it might take some times for her to get used to them ( not sure if she's fine with other animals though )