Well, there are a lot of personal problems in this world you should not be snooping around in, for one. And yes, this is a very likely situation. Read up on Mendel's laws of genetics. This is extremely possible. Even more so if she was bi-racial. You see, blue eyes is a recessive genetic trait. That means that the black gene for black hair and brown eyes is dominant over the white trait for blonde hair and blue eyes. But, if your black example is biracial and has one blonde hair, blue eyed parent, and one completely black parent, she will look completely black but she would have the genes for a blonde hair, blue eyed baby. So, if she marries someone with blonde hair and blue eyes, she will have a blonde hair and blue eyed baby for sure.