Liberty Ross' feelings about Rupert Sanders' affair with Kristen Stewart can be summed up in a single word: "Wow," she tweeted July 24, just moments after Us Weekly called her director husband's rep for comment.

The 33-year-old model and mother-of-two -- who played a young Stewart's mother in Snow White and the Huntsman -- also retweeted a Marilyn Monroe quote from the Women of History account. It read, "Sometimes good things fall apart so better things can fall together."

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Ross has since deactivated her Twitter account.

Before Stewart and Sanders were caught by photographers in a series of steamy rendezvous in L.A. July 17 -- see the new issue of Us Weekly for the exclusive photos and details! -- Ross blogged about a recent family vacation for Vogue U.K.

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"We are getting some R&R on the north shore of O'ahu after a lengthy press tour for Snow White and the Huntsman," Ross wrote July 4. "It's so beautiful here -- we are staying in an artist's house right out on a point with waves crashing either side of us."

For more details on Stewart and Sanders' affair -- and how it's destroying the people they claimed to love most -- pick up the new issue of Us Weekly, out Friday!

This article originally appeared on Liberty Ross on Husband Rupert Sanders' Affair With Kristen Stewart: "Wow"