I didn't have a similar situation (I did it just the opposite; I visited to get some face-time and then requested more money).
If I were you, I'd introduce myself to the person who you emailed, "Hi, I'm so and so. I wrote you a letter requesting reevaluation of my scholarship 2 weeks ago. Nice to finally meet you in person", etc. That way you aren't putting them on the spot to give you an answer, but you leave open the possibility to discuss it. How's that?
Other than that, you could just write a follow-up email to that describing what you liked from your visit and requesting a status update. I think, though, that they should see your face and talk to you in person before you do something like that. It'd be more memorable.