I just got a new kitten a couple days ago and we also have another older cat that we have had for years and she hisses at the kitten when they come close, I read something about putting the kitten in one room with some toys (I have 2 toy balls) but I do not have a scratch post yet, when we shut the door and leave the room on her she will start meowing for quite awhile, should we keep doing this even if she is whining? And she won't be able to get her shots until next Friday.