The Legacy of the Alldenata series: Honor of the Clan by John Ringo & Julie Cochrane.
The Posleen War Rages On – Undercover! Clan O’Neal Battles for the Right—And With Each Other!
The Indowy “Bane Sidhe” conspiracy has grown strong, and the cunning and resourceful Darhel—tacit rulers of the Galactic Federation—have decided that the time has come to wipe that threat from the stars forever. What the Darhel don’t know is that humans have joined the rebellion—led by thief and assassin extraordinaire, Cally O’Neal. Now Cally is set to destroy a web of alien deceit millennia in the making. Only one obstacle lies in her path: the renowned warrior who stood tall and saved Earth from utter destruction during its first invasion by alien hordes—a legend who also happens to be Cally’s father!