This means that in the real world, Elly would have no chance in a million of actually saving the Old Town Hall. It's no longer fit for human occupation, the arts community is about to move into a nicer space and pestering the local Thors and Wotans is as useful as a cafe on the moon. What would actually be happening is that some minor good would be accomplished. In the scenario I envisioned, it seemed to me as if the props, sets and costumes were to be simply destroyed out of hand despite their being still fit for use. It would irritate Sue and Nilda that they would have to buy all this new stuff when it would be a little easier to simply store the old material professionally so they'd try their damnedest to maintain some connection to the old building. The best way to accomplish this would be to get someone loud and noisy and who doesn't like asking questions when she gets enraged to make a big stink about things so they could beat down resistance. Enter someone kind of stupid, kind of gullible and all kinds of angry: ELLY. The whole point of this stupid party would be to show the politician they interface with that no, the costumes won't cause contact dermatitis at fifty paces.
The reason they chose Elly is, as I've said, because she doesn't get facts straight, she doesn't ask questions, she gets angry really easy and she stubbornly clings to stupid ideas for days at a time when she's told something that irritates her. It's the only way to defeat her innate tendency towards inertia and not disgracing herself.