hi, welcome and congrats on your pregnancy!
i am so sorry you dealing with this.
for your questions about the issue of marriage, i would maybe pop by blended families
Blended Families - JustMommies Message Boards, the ladies there are great and they may have advice for you.
and you might wanna also check out widely spaced siblings -
Widely Spaced Siblings - JustMommies Message Boards, the ladies there might be able to help you with helping you to cope with your daughters reaction to your pregnancy.
i really hope it all works out alright and your daughter realises how much she is hurting you.