@momma t,
No, you cannot make her have an abortion. You should have done a lot of talking and explaining before she got pregnant. As a mother it is your responsibility to educate your daughter about sex, contraceptives and pregnancy.
Since you missed that boat, please open the channels of communication now. Talk to her and listen to her what she wants. Depending on her wishes you can set up a plan in how to deal with her pregnancy. If she chooses to abort, then it will be her decision, not yours. If she wants to keep the baby then it is her decision as well. Regardless of her wishes, be there for her and support her.