You're right. She's a good Captain. She'd never abandon her crew.

[That just makes Dave more worried though. Even if he isn't the reason she's gone it still doesn't mean she'll come back. Most people don't.]

I don't think it was Deesuko Balia or personal business either. She didn't even seem interested in going back to her own world, so I don't think she left willingly. Sometimes people just disappear. No one knows why. Maybe Davy Jones decided he didn't want her here. Maybe she wasn't entertaining him anymore or she caused too much trouble. No one knows what that guy's agenda is.