Seagram7, you are correct that the big reason for her having difficulty in the dating market is her being a single mom. She would indeed have similar difficulty if her child was white and not biracial. However, I will state that the child being biracial is not the dealbreaker, but an additional issue on top of the primary reason. The issue that comes with a biracial child and dating is the visibility of dynamic that has taken place. If the child was 100% white and the guy coming into the relationship is white, when they are out in public, it is easy for them to "blend in" as a regular family where most people are not immediately asking the question of who is the child's father. It may come up in conversation, but it would not be something everyone could see so plain and obvious.

This same benefit of no one asking the questions about the child's father does not take place if you are white guy who is dating a white woman with a biracial child. Everyone can see the obvious lack of paternity of the man to the child, which makes it obvious to the world that you are not the father. There is no "blending in" with this scenario. And if every man who was in the equivalent situation had to where a sign above his head when in a relationship with a single mother that says "I am not the father of this child," we would see even less men willing to consider a relationship. And that is already factoring in the reduced pool of men, since a large chunck of them were disinterested when they find out a woman is a single father, regardless of the race of the child.