Nowadays in China, some girls got pregnant at their young age with Chinese guys and had to get abortion. Either because unprotected sex or bad luck. It happens. Women in love might do stupid things. If this girl is dating with a Chinese guy, and this thing happens to her, would you say "有些中国女子在美国不自尊的行为"? I really don't like this tone. I think most Chinese girls are much more uptight than other women.
The girl is cheated and is the victim. Hope she can learn some lessons, and can recognize man better next time.