Found this on a translator site that is translating the whole zero no tsukaima novel/manga. It looks to be tabitha her parents (in the back), her familiar (beside tabitha), and some unknown girl that appears in tabitha's specials of the novel/manga. Could be her sister or a realitive, but the don't get along or at least that in the immperssion i got from the other pics. Hoping someone can translated this because the translator site doesn't translate the pic.
Correct, those are her parents in the back. The other girl is Isabella, princess of Gallia and elder cousin of Tabitha. Isabella hates Tabitha because she's so talented, and sends her off to do missions for her, which is the basis of the Tabitha novel spin-offs.