Rinnosuke probably only had one DSi and he's never gonna get anymore. I feel sorry for Patchy. Why don't she just pay Yukari to go to the human world and get one for her.
CGrascal said: Wait...how far did Patchy run? She's not even winded.
Late response, but I'm pretty sure she just channeled the same sort of energy that otaku use on conventions and gamers use on LAN parties. It's just some sorta innate ability that triggers in truly dire situations.
"Zu~n" in and of itself is an established sound effect, expressing a feeling of depression. It is not necessarily a reference to ZUN, even in a Touhou story. When it's spelled out in English letters, THEN I might consider it a gag reference to the person. Otherwise, it's ambiguous at best.