And then she left: Science Fiction

He cheated while she was away on her diplomatic mission to Czartar. She won an award for that one, but it didn't make it worth coming home to find her husband had slept with the tattooed dancer girl at one of his banquets. The girl swore that she wouldn't have gone after him if she'd known he was married, but he'd given the impression he was separated. It didn't matter much, then, to her. She felt overwhelmingly tired. She had tried to keep ties to earth and family strong, she had tried to keep a marriage, even though they only saw each other every six months, and she had tried to stay a nice, good human woman, despite the wonders and temptations the alien worlds had opened up to her. That did it.

Inspiration: Sandra Bullock winning an Oscar and then finding out her husband had cheated on her.
Story Potential: Medium.
Notes: I like this character, and this could go interesting places, but the interesting bits would all happen around this.