Max saw him with her. She saw him carrying her sister's dead body. She knows he did it. There's no possible way that he couldn't have, right?Heather knows how much this hurts Max. She sees how badly this loss is crushing her. She just doesn't want this to ruin the group's dynamic. They've been friends for life, so of course they're still going to stay that way, right?Sydney knows how hard it is for Max to handle this grief. She saw Max go through the ringer over this. She knows how ugly this could get if the truth gets out. But, the truth does set you free, right?Carolina knows who really killed her. She sees how much Max hates him for what happened. She knows who did it. She wants to tell Max, but she knows it would crush her worse than her grief. Protecting her feelings is much more important than her knowing the harsh truth, right?