Hi all, We had our younger kitten (Dusty, 5 1/2 months) spayed today and brought her home to find out older cat (Pepper, 13 months) has decided she no longer likes her... There has been hissing, swatting and growling. They’ve been separated for most of the evening but I thought it might be the collar that was confusing Pepper so when we took it off for Dusty to eat and drink we tried letting them together again. If anything Pepper was worse. They are separated again for the moment but I’m worried about Dusty feeling delicate and potentially getting hurt. I’m aware that I’m likely over reacting, and Pepper just needs a bit more time but they aren’t super bonded to begin with and I’m don’t want this to cause any lasting problems. To top it off Dusty obviously hates her medical vest, hates her collar and won’t really rest event though she’s clearly feeling ropey. Queue one anxious human. Any advice would be very welcome.