My 3 year old step-kid is getting to the point where “stranger danger” is VERY important. They’re very shy and refuse to play with other kids...just the parents or other random adults. They will strike up a conversation with any passing adult and even try to open the door when people come knocking. This is TERRIFYING for my spouse and I. How do you handle stranger danger with a kid that young without making them completely terrified of the world?