My thoughts: She's young (i remember that at 18, I did/said a bunch of stupid things that I would never have done at 20!). And I very much doubt she's thought this through past the prenancy phase! No one should have a child on a whim.

AI is still a very expensive procedure & I think you should really encourage her into counselling to get her to understand the full implications of what she wants to do. If she were my daughter, I would not support her financially to do this & would make that very clear. Emotional support is fine, but if she really thinks this is the right thing, she can pay for it on her own (or with the donor).

She needs to know that a baby will completely change her life as she knows it. Some doors close for a long time when you make that choice. she's going to have to be really really driven to get back into tertiary education as a single mum (I know - my mum was one that did it).

I agree that you can't push her into the right path, but only encourage her.

Does she still live at home with you?