Flawless girls

"The Soler sisters are infamous in polite society--brazen, rebellious, and raised by their fashionable grandmother who couldn't care less about which fork goes where. But their grandmother also knows the standards that two Latina young ladies will be held to, so she secures them two coveted places at the Alarie House, a prominent finishing school that turns out first ladies, princesses, and socialites. Younger sister Isla is back home within a day. She refuses to become one of the eerily sweet Alarie girls in their prim white dresses. Older sister Renata stays. When she returns months later, she's unfailingly pleasant, unnervingly polite, and, Isla discovers, possibly murderous. And the same night she returns home, she vanishes. As their grandmother uses every connection she has to find Renata, Isla re-enrolls, intent on finding out what happened to her sister. But the Alarie House is as exacting as it is opulent. It won't give up its secrets easily, and neither will a mysterious, conniving girl who's either controlling the house, or carrying out its deadly orders"--Provided by publisher.