If you train Meka to stay indoors from the start, she will just get used to it, I have indoor/outdoor cats which is the norm here in my country, indoor is almost unheard of , except in breeding pedigrees, however they are kept in at night times.

Ash is almost impossible to keep indoors, but Lexie I have accustomed her to doing so, and even though she can go outdoors during the day, she only spends a limited time outside, she is curled up fast asleep beside me right now in the computer room in a alcove.

I would strongly recommend keeping kitty indoors if you can, it is something I wish was possible here, if I ever shift house it will be a top priority to have an enclosed outdoor facility, it just cannot be done easily here.