I keep them separate from eachother because I am not sure that they will get along.
Could either one attack them? Theyre both females I believe (the kittens)..and really cute=p The mom cat is usually but what if she isnt?
Some times the 1 year olds manage to escape and I saw the guy cat just staring into the cardboard box (in the study) where the mom/kittens are. Then he walks off. But the female cat (maybe you read my other recent question) and she kisses and growls.