I'm a little wary of purely data-driven writing changes. Without reading your book, I can't say if 62 smiles is 3 smiles too many or 5 smiles too few. But in terms of a warning sign of possible deeper issues, the question I would ask is whether your characters are too agreeable.
Although having someone smile and nod when someone else hits on their husband might be realistic, we generally want characters in fiction to be more active and demonstrative than those in real life. In this situation, even if she doesn't take the (more entertaining, but probably overdramatic) route of causing a scene, I'd at least expect a grimace, or a "forced" smile, or her hand to tighten momentarily on her purse.
It's okay for her to fool the people at the party, but if she's really not OK with this --and why would she be? --then I feel we the audience should know that. Even if being passive and overly agreeable is a key part of her character, we should get at least a hint of whatthe effort it takes. Ishiguro's Remains of the Day is costing herbasically an entire novel about someone whose job description includes smiling and nodding, and what it costs him inside.