)
Hmm...
~~I'm only on Ch.5 of Speak, but that earth pony might be Dry Clean only? Hasn't described said character's description in the story to my knowledge.
~~ **EDIT:** Nope, Dry Clean is an alicorn. No character seems to matche this mystery mare on the left. Must be an OC. \^\^
"Lacunae" might actually be a character called glitter bomb come to think of it.
[spoiler]
||Unless it's Psalm[/spoiler] ||