I knew a girl like that...
I don't talk to her anymore really. In her case, you could tell that she was making bad choices. Wasting money she didn't have, then needing a handout. Not to be snoody or anything, but it's difficult to remain friends with people that you expect to be at a certain place - and I don't mean "She should be making X amount of dollars per year".. but a bit more stable, responsible, etc. I had my first kid really young, but I also worked really hard and went to school. My husband and I are both pretty successful and our kids have it better than we both did as kids.
It sucks. Because you feel obligated to help, as I have in the past, because there are children involved, and it's not fair to them. And at the same time, I think it's important for them to get themselves out of these situations so they'll be a better person and learn how to live on their own.
If it were me, I would have bought her a crib set (I'm assuming you mean bedding) that was half the cost and see what she said. Sounds like she's using you, but if not, she would have been thankful to have anything IMO.