Momudi, I just looked at Sion - yes I agree they are very similar :) Sion looks a bit younger than Sister though - she's getting on a bit now - somewhere between 7 and 8 years old.
Hi, I have taken a look to all the pictures of Sister. She is a really beatiful cat. I have two cats, Milka and Sion. Please, take a look to Sion, she is as black as sister and they both look very similar.
Hi Saaski, no because she has access to a fairly large cage attached to the house for fresh air.
Also, we have a leash we use to take her out on 'walks' each day :)
Also, she will sit for hours on end in the sun on a chair with the leash extended to about 20ft to allow her some flexibility...
She prefers this environment as she never sees another cat, which was a major source of stress for her at our old house