//Uh, we only got the whole 'change bigness/smallness' thing because Sanae's miracles went wrong, right? (And got us and her into trouble with Reimu, too...) Even if we convince Sanae to put more miracles onto us, would it really go the same way? And even if it would, it got us into... erm... that place in the bamboo forest last time, and apparently got us stuck there for a while. Wouldn't Reimu get suspicious when she hears that we are there again with the exact same thing?
//We can already go from "a bit bigger than someone's hand" to "a bit taller than a bamboo forest", anyway. Would we need to be bigger than that? Sure, it'd be really cool to be as tall as a mountain, but wouldn't Reimu get annoyed if we do that? I mean, mountain-sized fairies are probably not the most common thing in Gensokyo, right?.. though, it is Gensokyo, so...
>Are mountain-sized fairies a common thing in Gensokyo?
//Anyway, perhaps it's better to leave the choice to Cirno? She's the leader, after all.