‘She has no ambition’: I make $100,000. I’m buying a home before the wedding. My fiancée earns $50,000 and has $20,000 in student debt. What’s a fair prenup?

Dear Quentin,

I have been in my current relationship for almost three years. I’m a young woman, 41, have a great, stable career and make about $100,000 a year. I am ambitious and my prospects have me increasing my income by $10,000 every year. I have about $140,000 in savings, and no debt. I am close to closing on a home, which will be completely financed by me. 

My…