Liberty Ross -- Speaking in Code Before Divorce Filing?

Liberty Ross didn't seem like a woman about to file for divorce when we spoke to her just two weeks ago ... or did she?

As TMZ first reported, Ross filed for divorce yesterday from her director hubby, Rupert Sanders, who made headlines over the summer for his fling with Kristen Stewart.

When we caught up with Ross outside of the Chateau Marmont back on January 11, she said the latest with her was simply ... "happiness." (Or maybe she said fabulous. Hard to tell. But still ...)