Irrated with lack of responsibility towards Harper.

Okay so I've watched the entire show. But what still confuses me is in the literal first episode throughout the entire show in general- why did they all hate HEAVILY on Amerie about making the map but not Harper? Even when they found out she made the map too, no one batted and eye, but continued to call Amerie names including "map bitch" and bringing up the map.

No hate to Harper but that seems so odd to me that no one seemed to have cared she did it too but Amerie continued to get the harassment.