First of all, I agree with Obi-Dawn that Angela's mother wasn't exactly cooperative either and I really don't think it is entirely Jeffery's fault. Secondly, to all of you saying that it's awful that Jeffery didn't apologize, there are times when apologizing right away isn't always something that is a good idea. Jeffery seems to have a short temper, like myself incidently, and thus he probably needed some time to cool down and did that by working on his garmet. I really think that had Jeffery apologized right away Angela's mom probably would have said something that would have (unitentionally) rubbed Jeffery the wrong way and he would have ended up snapping at her again(most people aren't rational when they're upset, Jeffery was hurting too since he felt like Angela's mom had gone behind his back to complain to Tim about the colors and such). I don't think the conflict was entirely, mostly but not entirely, Jeffery's fault and I think they both needed some time to calm down. It's also possible that Jeffery did apologize after the show was over. You never know, he might not have but he also might have thought about it rationally later and realized that he had overreacted and snapped at her. Edit: I'm not excusing his behavior nor saying that he shouldn't apologize. I just don't think, considering his mental state, that apologizing right then would have been a good idea.