The story of a man scorned. Was I wrong?

Ok so a while back a girl curved me who I’ve known for some years. Overall (by some people’s standards) I’ve been fairly successful with women, so I’m def not a super-incel but I’m lonely as it’s been some years since I’ve really had a legitimate relationship, which is a sore point for me. So anyway this girl ended up getting pregnant a few months later apparently by a loser with no money. She asked me to donate to a go fund me she made to buy clothes and stuff for her unborn kid, and the gist of my response was basically that she should have chosen more carefully, and that I wasn’t interested in doing anything to help her. Was my response justified or AITA?