I totally agree with you, cinlynn! It's never a good thing to be forced to get married, for whatever reason.
To raise a child is a difficult thing, especially at her age (if I remember correctly your daughter is 17, isn't she?) And to raise a child within an unhappy relationship is even more difficult.
Since I'm close to your daughters age, I can relate to her and I know for sure that to me it would be the worsed thing if my parents would force me into a marriage I can't be sure of, just b/c of a baby.
I don't know your daughter but from my point of view I would feel best, if my parents would support me no matter whether I decided to get married or not and if I therefore had the freedom to choose on my own.
Just my thoughts, I pray the two will work it out in whatever way.