@Quintan Slay
I'm going to say this from a woman's perspective and also someone with a background in psychology. She clearly does not seem interested to the extent you are.
Now, hold that thought because that does not mean she could not be passionate about another aspect of the process or even all of it one day. I wouldn't push it and cause tension. I'm sure you are not marrying her to be real estate partners; I hope :) If you cannot let the fact that she is not as passionate as you, please work it out in yourself before you marry. You don't want resentments starting into a marriage.
My husband use to be an accountant and I could not relate. I was a Special Education teacher working with kids with Aspergers. Only way I could help him was with the social aspects of working with different personalities.
He later became a Math teacher/ Special Ed. Teacher, and I can now give him advice. That's not to say I don't get frustrated when he doesn't listen, lol.
Now, we are both getting into real estate together. We compliment each other. He made me an awesome spread to analyze deals. I found the deal. He's the handy man and I love to decorate and come up with remodeling plans.
My point is we both have different pieces of the puzzle.
She's a social worker maybe she'd get excited about providing affordable housing down the line or helping people on section 8. Be creative.
Number one rule of psychology you can't change people. You can provide her with information and ways she can be involved, but at the end of the day this may be your thing and that's ok:)
Work this out before you tie the knot if it's a big deal to you. I've read too many marital books and been through my own things to know you need to resolve this. It won't go away at the altar.