We had the same issue on our road and also asked for a speed bump.
The short answer is: it's not going to happen, no matter what.
Reason: it can damage the fire trucks (that's the short answer - the long answer is too boring).
Bottom line: watch your child and hope some idiot doesn't hurt her or others while driving like a moron. Sadly there's nothing else that can be done.
This post that Officer Foreman put up four years ago today is interesting, though:
http://bluffparkal.org/bpforum/YaBB.pl?num=1195592950 Just change the to address to Office Hale, who has taken Officer Foreman's position (haleb@ci.hoover.al.us)