Eileen’s past is a troubled one. She found out about her mother’s murder (Marina - killed for daring to speak her mind) only in early adulthood. Nobody had wanted to speak about it partly to avoid upsetting Eileen, who showed she knew her own mind from a very early age, but also because it was suspected (though never properly proven) Marina’s murder was akin to a politicial assassination. Eileen swore she’d uphold her mother’s reputation for truthfulness and belief that justice was worth fighting for. Marina, certainly up to her daughter’s defection, would be proud of Eileen.
Marina and Eileen come from a very long line of noble royal fighters. Part of the reason the royals bagged the throne was they led the defence of the realm when it was being attacked by outside forces and it was felt giving them the crown was an appropriate way of thanking them. Eileen certainly believes it’s become a bit of a curse and has no wish to inherit it herself. Jennifer was horrified to learn she wasn’t just half fairy but half royal fairy. She got out of dressing up in a posh frock and a crown when she was a kid.
Eileen still hasn’t told Jennifer anything about her grandmother’s past as Eileen fears Jennifer will think she’s trying to use this to exploit the girl. Eileen is vulnerable where Jennifer is concerned. Anyone else and she’d happily exploit them but not her daughter. Eileen would at some point like to campaign for a proper statue to be put up to commemorate her mother but knows she is unlikely to get this out of the Queen unless she agrees to returning to the Kingdom at once. FNN did once do a brief biography of Marina as part of their royal series but her sudden, unexpected death for whom nobody was ever brought officially to account, meant they could only give out sketchy information.