Aw come on, don't play the orphaned little girl card, you know I can't say anything now without sounding like a monster!
Anyway, can't she leave it near but not at? And as for offerings having a "significance" to the offerer that makes them immune from removal, that would mean anyone could leave anything anywhere - and no-one could tidy up in case it was Fido's favourite toy! Nah, personal significance is personal and shouldn't be imposed on the community. Graffiti can be deeply personal yet dreadfully vandalistic at the same time.
My point there was to show how peoples OWN view on whats decent and whats not shouldn't come into it. Lots of earlier posts were saying how nothing should be left and that people are making a mess of the place but these same people were happy with the little carved stones. Thats just not fair!