Number5,the fact that your husband has married 5 times, says it all. If he couldn't "love, honor and cherish till death did them part" 4 times, what makes you think he feels that way about you? I'm sorry to sound so brutal on my first post to you, but this situation is bad. You will not change him or his daughter.
I'm glad you joined us here and if you stick around, you will get lots of loving support, no matter what you choose to do. And there are many of us already begging Almighty God to protect you and guide you.
Peace.