Elf princess Rosie Roo
Because of Rosie's long aristocratic nose, and tendency to look down it disdainfully, her elegant form, her pointed ears and ability to float lightly over muddy ground, I said that Rosie must be an Elf Princess. After some discussion with Pp, we agreed that if Rosie was a Middle Earth Elf Princess, she would be Aredhel, White Lady of the Noldor. Because Aredhel is the princess notable for not staying where she is told to, but instead unwisely bogging off and doing her own thing, with unpredictable results.
So here is Rosie, imagining herself as Aredhel.