So, I saw a Touhou MMD called "If You Could Steal in a Dream", telling the story of Marisa who discovered that she can steal items in her dream and bring them to reality. If you haven't watched this MMD - please, go and watch it now because I am about to spoil the plot. You can find the English subs to it on the YouTube.
First of all - I really wonder what happened to Marisa in the end, when Sakuya got her. Did she get killed or was she forced to stay there until she returns everything (like Remilia and Flandre told her to do). Well, Marisa couldn't return to real world since SDM literally locked her in her own dream, so she probably was locked up in her dream for eternity. Second question - why did Aya tell her about that? Did she know about consequences of this? If she actually did - it gets pretty creepy. And when Marisa saw BunBunMaru newspaper in her dream knowing that no one in SDM reads it, then why was it in SDM? That means, Patches and Sakuya who disappeared somehow interacted with Aya. But how? Obviously, Aya offered them a source of items located in dream. And then there is this question - why did Aya tell that to Marisa, Patche and Sakuya? Did she want to get rid of them? This is pretty frightening.