Lobo,
Maybe you already know this, but I am expecting a grandbaby this Feb. or March, and it was quite unexpected. Didn't find out about the pregnancy until my AS's (age 35) GF (age 18 1/2) was over 4 months along. It is not the ideal situation, but who am I to judge? She wants the baby, he wants the baby. I already love the baby.
As for your daughter, she needs someone besides you, who will support her in all of this, and somehow "turd" guy, doesn't seem like the one...the worst part is, she has the baby, she gets to deal with "turd" guy for the next 18 or more years....
Another point, we get into thinking of the future, and it's all for naught, God seems to take care of all of it, without any of our assistance.
Don'y worry.
Baby's are a gift from God.