We have a lovely almost-6 year cat. She is very much DS1's cat and we would like to get a kitten for DS2 who often feels left out ( he is 9) but we love Dcat and would hate to upset her. S Do you think it would be OK to introduce a new kitten into this set up? he is not as crazy as she used to be and likes to have a snooze but still enjoys lots of mad playing too.We have a 3 floor house so she could easily get away from the kitten if she wanted some peace and quiet.