Gut feeling from me would be that would need its own license as all the details would be different. In fact, I'd be concerned that each time a cloud based Windows VM was brought up, would it have different licence characteristics? Of course, they may have thought of all that licencing stuff.

What I really wanted to mention though, was that Maria is unlikely to be able to access anything fancy from her work PC as it's liable to be very restricted - no ability to install cloud access mechanisms, eg. In the most restricted case, she might even be confined to approved websites only. 

Of course, her work installation might be quite flexible but it's a factor to bear in mind.

Adrian