As much as Isabel wanted to explain that it was a reference to the character "Revolver Ocelot" she figured that, with Metal Gear Solid being as ancient as it was, there would be no way she would have the time or patience to explain the origins of the humble video game. She knew that there really was a cat called Ocelots, however - having deduced as such from the character's dialogue in the games - so she simply let Weiss believe the idea of it being a cat. 

"Masara." she answered. "Quiet colony world. Not a lot of traffic and chances were you were a farmer or someone working in the few small towns the planet had." she explained. "It wasn't a very exciting place." 

Of course, there was the time the slavers attacked, but she didn't know if Weiss would know about that. After all, it was a small planet with a minimal population and there were much bigger conflicts for the public to be concerned with. "How about you?" she asked, feeling that it would be rude for the conversation to be focused only on her and thinking that since Weiss was trying to get to know her, she should try and do the same.