I am sorry to hear that Ti didn't work out Sas. Aby females are very territorial and if an older cat comes into the house they can get quite hissy over it all. It sounds to me like you need to inform someone of that breeder. Most breeders in Australia if the cat does not work out in your home are more than happy to take them back for rehoming instead of them ending up in a rehoming centre. I think it was personally irresponsible of the breeder to not tell you the truth about Ti and that it is not your fault or Miley's fault for that matter. He sounds to me like he needs a one cat household. Maybe he is the same as Noami's Oliver *I hope I got the name right*.

Don't feel badly Sas you are doing the right thing by Ti, Miley and yourself. You cannot live that way and neither can Miley. I know that you will miss him but I am sure you will find him a great forever home