ooooh, be careful!

My brother tried to do what you did, and have his girlfriend go and apply to the consulate to visit first. They told her that because she has a boyfriend in the US, there was no way she was going to get a tourist visa.

He eventually applied for the K-1 fiancé visa and it was approved, though the interview has not been scheduled yet. I learned from his mistakes and just went straight to the K-1 route.

If she is wealthy enough on her own to qualify for a tourist visa then she may get one, though not to visit you, and she would basically have to prove she was going back. It seems though that the are no way going to give her a visitors visa if the purpose is to see you, or if they even know she has a boyfriend in the US.