without seeing exactly what is taking place i cant really offer anything. If they've not been socialized with young children, they tend to be curious but nervous at the same time. Also if everyone is so tense about the meeting, the dogs will pick up on this and think there is something wrong with the unusually sized person. Some dogs are very gentle and relaxed around kids of all ages and take it very carefully on instinct. Some dogs are naturally nervous around kids. i'd have to see the behavior before i could say for sure.