Tried feliway, reintroductions that are slow and careful, scent swapping. The two year old female HATES the 8 month old female kitten. My other three year old male gets on with both. All three are neutered. We adore all three. How long might this process take? Might they never become friends? If not - the unthinkable - we may have to think about rehoming the newest addition as my first responsibility is to the older cat. This would be devastating. All advice/experiences welcome