I stayed in a hospital alone for several nights - nobody suggested that was an issue and the room only had my bed and a tiny sofa so I doubt anyone could've joined anyway.
If she's an educated professional (with a high enough salary that she's unlikely to become an economic migrant) and more than enough money in the bank to pay for a big shopping holiday in NYC/LA (and her travel plans are along those lines), 90%. If not, 1%.
I just wondered because Agoda is part of booking(dot)com (some hotels even merge them together on their systems) - indeed, it would be interesting to know what's going on.