Board Thread:WARNING ALL USERS False Info\Spoilers/@comment-14280352-20130802221458/@comment-1587802-20130802222645

They weren't sexually molested, they were just the scapegoats of the pack. Stiles brings up the phrase "the bitches of the pack" as a figure of speech kind of, that they were at the bottom, the ones blamed for everything, not literally as in sexual molestation.

Also, it wasn't the Alpha pack Ethan was referring to. Ethan was referring to their original pack. Deucalion taught Aiden and Ethan how to control their merging ability, and with that power, Aiden and Ethan killed the rest of their pack, becoming Alphas, then they joined Deucalion's Alpha pack.