Keeping such secrets weight one down and has its psychological effects. Especially when you think could have done more to salvage the situation. It plays on one's mind.
Truly in your case you where left in a difficult position and as a child bearing such burden for adults who were supposed to be the responsible ones in this case is so disappointing. Finding a more elderly,responsible and respectable person to confined in would have been a better solution for a young you especially since your uncle decided to overlook and caution you against offending his friend.
This would have been a perfect way forward. Anytime I remember such a situation, I just wish I could have salvage the situation in any possible way and confiding in an elder would have been perfect.