It's not your fault, don't feel bad about it. I don't know what to do either. [Really, Alma's already had people throw all these different reasons and justifications at him why he shouldn't be mad and why it's not their fault or why he should want to get back at them--it's nice to have people just admit they don't know either.]
I know why...but it still a really big lie that they knew would hurt if I found out. The truth is bad...but the lie hurts a lot, too.