What is her eye color? If its brown don't worry too much about it, baby will probably also have brown eyes. Also since you are both part white the baby won't come out black, just a bit of brown tan.
And while I believe she indeed does not want you involved, you have to think about if you wish to have a part in this kids life. If you don't want to be fully involved then at least ask her to visit from time to time so you can check up on the kid.
Never hide stuff. Let light shine on it. She cheated, she can deal with the aftermath.
She doesn't seem very remorseful, not sure there is anything left to save.
Yes, please tell her, she deserves to know she's in a relationship with a creepy cheater before she marries him.
What is her eye color? If its brown don't worry too much about it, baby will probably also have brown eyes. Also since you are both part white the baby won't come out black, just a bit of brown tan.
And while I believe she indeed does not want you involved, you have to think about if you wish to have a part in this kids life. If you don't want to be fully involved then at least ask her to visit from time to time so you can check up on the kid.