My sister broke the news a few weeks ago that she is pregnant while still in UNI, and the person doesn't want to take responsibility. As a good brother, of course, I told her that she has my full support with anything she needs, I have a really good job so if she ever needs money or anything I would not hesitate in helping her out. That is until I found out just recently that the person that got my sister knocked up was a black dude that apparently got kicked out of university for reasons unknown (sister wont tell).

Now frankly I feel disgusted and deeply disappointed I kinda regret telling her that she has my full support. I really don't want to partake in helping her out anymore but I also don't want my family to think that I'm some sort of racist. What should I do? How should I approach this situation?

Frankly, I'm feeling disgusted and deeply saddened at this moment I would appreciate any adive, thank you.