Help!!!!!!

I am deeply in love with a young lady. We have been together for 7 months now. We are both divorcees and this is the first time I have really been in love. I am 31 years old. I am sure she is the one for me but she is the type of person who questions everything. She was in denial of her feelings because of a past relationship. The young man got her pregnant and she had to abort the baby because the young man was found to be unfaithful. She regrets this decision but she already had 2 kids from her marriage. So I guess that played into the decision. She is now very much in love with me and she says she never thought she would be again. She says she wants to give me her whole heart but it's hard for her because of her past. It's like one minute she talks about our furture and wanting to get married to me eventually, the next she is unsure and moody, because she is afraid I will change. I do a lot for her financially as well as emotionally. I am always there for her. She says she is over her ex, this was 3 years ago, but I don't know. How do I make her realize I am there for her and really love her? I show her everyday. My actions and words are there. She is confusing me by her going back and forth and constant doubts. So now I feel like a wall is growing because now I want to protect my feelings. HEEEELPPPPP!!!!!!!!! I really love her and want this to work out. Ladies help me please.