wait what happened? all of these stories have confusing endings

She sees ed cheating on her, so she stole a poison to die, but that kid stole it thinking it could be used to give her happiness. When ed explains what's going on in his life and gets Charlotte back, the kid sees her crying and want to use the happiness potion. She give a drink with poison to Charlotte and Charlotte dies. Not complicated at all stupid

no need to call someone stupid. but like you mentioned, the endings are really easy.