Thank you both for your advice...I will try the toy/litter swapping and see what happens. Amber seems slightly less put out today, she is much more receptive to me and explored the kitten's room today (without the kitten in it!) and didn't seem freaked out, and even ate all Millie's breakfast as well! I think you're right Janee, the hissing/growling thing is a lot more worrying for us than them...anyway we shall see what happens, thank you both again xxx