[Given how it's reacting to them, it's very likely it hasn't had much human contact... Yet even as young as it is...]

It doesn't look too malnourished, so it must have been able to feed itself somehow. Granted since it's a fairy, its diet may be different than a normal cat.

[Which they'll have to figure out... But Eustace is studying it, noting its health before helping Tifa in looking around. And when they find the dish towels that were clearly placed there—]

Looks like there really has been someone looking after in some way.

[...But what's with the sprinkles...]