I'll be posting Rosa and Ella's interaction first. Feel free to join in when you're ready.
Rosa is dark-skinned, with straight-cut bangs and brown hair tied up in a high ponytail. She has brown eyes a few shades darker than her hair, and ended up with the dress. She died recently at the age of 15 in a car crash.
Ella has fair skin, with short brown-blonde hair and green eyes. She also got the dress, and managed to keep her hat with her in death. As she is still unable to recall anything from her life, her age, the era she originates from and how she died is unknown (this doesn't happen often, but it has a higher chance of occurence with young children than adults). She appears to be quite young, however.
(It is not necessary to describe their personalities and such, as I have found that to describe a person's personality completely is impossible. This is why I didn't put in a form to fill out for GotE, or put one here either, for that matter. It is, however, required to describe their appearance, at the very least, to make it easier to envision what is going on :))