If you put her in a small room, such as a bathroom, with food, water, a litter box, and possibly some toys, she'll be perfectly able to entertain herself. (She'll probably play under the door with your current cat, too.)
Kittens don't have a very big world. I have found very few who wouldn't settle down in a quiet room, once they don't hear activity outside the room.
But be sure to "kitten proof" the room. Put the toilet seat down. Put child-proof locks on the doors, if possible. You don't want the kitten getting into anything poisonous, and that would include most lotions, toothpastes, cleaners, etc. Don't leave strings around that they can swallow. Others here can give you even more pointers.
We have very social cats, but we can leave them for several days and it doesn't seem to scar them for life. In fact, sometimes I wonder if they even notice...
Kittens don't have a very big world. I have found very few who wouldn't settle down in a quiet room, once they don't hear activity outside the room.
But be sure to "kitten proof" the room. Put the toilet seat down. Put child-proof locks on the doors, if possible. You don't want the kitten getting into anything poisonous, and that would include most lotions, toothpastes, cleaners, etc. Don't leave strings around that they can swallow. Others here can give you even more pointers.
We have very social cats, but we can leave them for several days and it doesn't seem to scar them for life. In fact, sometimes I wonder if they even notice...