Some of you might have read my other thread I've opened yesterday.
I have bought a new cat a few days ago, much to my resident kitten (only 4 months old) displeasure. My new cat absolutely hates to be closed in the room (she constantly meows and scratches at the door to get out), so on the second day, I already let her meet my resident cat. They don't seem to be extremely aggressive towards each other. No actual fight has broke out in the last 2 days. That being said, earlier my resident cat approached the new cat in what I'd personally describe as "friendly manner". Her tail was not puffed at all, no hissing. The new cat hit her twice with her paw. I think it was pretty soft, but I'm not sure. Anyway, I instantly took the new cat and closed her into her safe room again.
TL;DR Is it good to close the new cat into her room when she or the resident cat behaves badly? Or what's the best approach here?