Thanks everyone, I'll keep you updated!

Logan, I think a lot of people are making this experience you have made, and some cats don't even co-exist, they keep fighting. I can see this in the two cats of friends of mine; even though they are old now, they never learnt to accept each other. I hope I'm more lucky with Luna and her future sister. Like I said, she's very interested in other cats, but most of the time, she met them in their territories, so I don't know how she will react when she has to share hers.

Kirsten