They waited a few days, and were still on vacation when they filed a complaint. I'm not saying who is guilty -- I wasn't there so I don't know, but here's my take....
It troubled me, too, that the mom didin't react on the spot, but I can see how it can happen. When something like this happens and it is COMPLETELY unexpected, the vicitm would be shocled an confused and even self-doubting. The thoughts would likely be something like this, "Wow. That made me VERY uncomfortable, could this be happening? Am I crazy? Surely Tigger didn't just fondle me..." And she's on vaction, doesn't want to make a big scene in front of her family....come to hear her daughter is upset and the same thing happened to her...now the inner-debate of whether or not to complain. They are on vacation, etc....
So in thinking about it, I could see where someone *might* take a few days to decide to complain.
And then, if you read the charging affidavit published in The Sentil, there was some weird details regarding Tigger. He laimed Dyslexia causes him to have trouble remembering events, past and present (huh?), and he presented the police with SEVERAL envelopes of photos, after admitting that he has somone take photos of him while he's in character. It was after seeing the photos that the police arrested him! Hmmm....And he was a "fairly new" employee. That all sounds pretty suspicious to me.