[Squeek]

You can get a new whistle when you finish the last orphan quest. I was hesitant to do this myself, but since there are two different orphans you can get, I figured I'd risk it. So after I got Speedy, I talked to the lady again and she has a dialogue option along the lines of "Hey Children's Week isn't over yet, can I borrow an Orphan for a little while longer?" and she gives you the whistle back. The same worked for me in Shattrath too.

But I totally understand not trusting Blizz on that one.

Yeah, ended up with Egbert and Speedy. They're both awesome. All 6 pets are awesome. I want them all =x