Now, first, I have to say: Her parents (or present guardians) are doing whatever they can, within reason, to get her to shush - and have been reasonably successful. This is not one of those permissive-parents-you-want-to-line-up-a
Still, periodically she gets excited and lets loose.
The interesting thing is my reaction. I can be quite reasonable and understanding between squeals. During them, however, I have a definite visceral reaction.
I want to smash whatever is making the noise until it stops.
Immediately afterward, the engineering and scientific training takes over, and I start to think that one should be able to eliminate the behavior by repetitive negative reinforcement.
And it should be easy to adapt the construction of those dog "anti-bark" shock collars for the purpose...