Tramatic Bike experience

just had a traumatic bike experience. we rode to the other end of the neighborhood, As we are headed home it's getting dark and about 1/2 way home the chain falls off of Hays bike. Do you think any of the dozens of cars that passed us stopped an...d helped? NO! So I tried to fix the chain and had no idea what i was doing so called my friends hubby and he came and saved us. Thank you so much Brother Fish.