Ukrainian women

Hey so I am doing a dating site for Ukrainians. I am a guy. It is called "My Special Dates." The site does protocols to help avoid fake profiles and the response rate is high (unlike standard dating sites where the response rate is one in several hundred). Well, I notice that Ukrainian women seem to be pushy for the most part. The woman I am talking with the most that we are thinking about meeting up in person seems to hardly respect the fact that I want to limit how many videos or letters she sends because they guzzle credits. I've had to get emphatic with her and tell her over and over. I noticed that the Ukrainian women seem to have a very hard time taking No for an answer. Are Ukrainian women rude? I don't believe that this person is a scammer but I feel like she is testing my boundaries.