Let me get you guys input on this matter.
At work, my co-workers and I believe that our boss (who is the "Top Dog", so to speak) is being verbally and physically abused by her husband. She has come to work with bruises on her face (albeit covered up with make-up). Nothing really noticable unless you are talking to her face to face. She also missed worked a few times, claiming that she hurt her arm (falling, working in the garden, etc.). Just last week, she said that she hurt her wrist while using a jackhammer

claiming that she was helping her husband with some project.
When she first came, we all had jokes about her husband, because he is a total rag-a-muffin that reeks of the smell of alcohol (mind you this was during the day). We couldn't figure out what she sees in him. He wears a slick backed canary yello mullet and carries a guitar. (This fool once busted into a meeting in order to serenade her with his guitar). But now, this mess is not funny at all!
Anyway, as stated earlier, she is our Controller, so the only person that we could tell would be the VP of Finance, who is her buddy(and a complete @$$hole) and the person that brought her here in the first place.
So in short, what would you do?