It can export to ODT or HTML, both of which can be imported into word, or moved over by crudely cut and pasting into Word.
I think the bigger issue if she already likes Scrivener is that if that is the functionality she wants, then unless she wants the flexibility of being able to customise a tool or process Markdown files with code or switch to Linux etc. is something she wants, then it's not likely the tools you've pitched, or this one, will be an improvement.
I write in Markdown myself, so I absolutely sympathise with your POV on that, but I think the "rock solid word export" is more of a way to get you off her back because it works.
I think the bigger issue if she already likes Scrivener is that if that is the functionality she wants, then unless she wants the flexibility of being able to customise a tool or process Markdown files with code or switch to Linux etc. is something she wants, then it's not likely the tools you've pitched, or this one, will be an improvement.
I write in Markdown myself, so I absolutely sympathise with your POV on that, but I think the "rock solid word export" is more of a way to get you off her back because it works.