[A less cheerful Sakura is usually a pretty noticeable one - and given how few of them are around lately, it isn't too strange to guess why someone might be a little sadder in these instances, even if it isn't the case of someone having just recently disappeared.]
Hey... [Joining her after a while, not wanting to call attention to anything if she doesn't want to talk about it, but,] You know the trick to that goldfish game? I can't figure it out without just cheating.