What the fuck are you guys talking about? I don't know ANYBODY, even adults who can take 9 good hits of LSD and not be a little bit loopy afterwards - this assuming they had a good trip, were well prepared, etc. Look at some of the trip reports of adults who were prepared and had a bad trip off of just a couple hits. They often report being fried for a while afterwards. Think about NOT being prepared, NEVER having experienced anything even close to a trip before, and, on top of that, being a small child who is still in a critical stage of development where even minor experiences can hold great import. I'm hoping the child's brain is developed enough to be able to block out memories forever, and that the experience was horrible to the point where the child's mind would block it out.
An lsd trip is a lot to comprehend and a lot to integrate. It is not safe for 3 year children.