AITA: My GF wants to eat in the lobby, I want the restaurant. she said I should be ashamed of her.

I was raised by a single mom who didn't earn much, we were poor. When I was 8 my dad came back into the picture and paid child support, he was very wealthy. My mom used that money to send me to a good school and pay for tutors. It wasn't until I was 13 that I found out that I was a trust fund kid. My dad said not to worry about paying for college because he'd pay for it. He did and I got my degree in Computer Science. He then offered me a job in his company which I took. It did not take long for me to get a promotion, promotion after promotion. Suddenly I was in my late 20s I was senior management and making a lot of money.<br><br>I met Beth at a coffee shop and it was weird because I didn't know how to act. I have been poor or rich my entire life. I was very anxious about it because I wanted to tell her that I was rich but didn't want to come off as "hey, I'm rich want to date me". I decided to wait and see how it went before telling her.<br><br>She's great. We've been dating for 4 months and I decided not to tell her because I wanted her to like me for me.<br><br>Well, last night she found out. I took her to a restaurant and had made a reservation. When we walked in they greeted me by my last name and shown us to our table. It was on the patio and Beth asked why we got a good table. I told her they know me and she asked why. I told her my dad owns the company that owns the restaurant and she asked me why my dad owns the restaurant if he works for my company. I told her it was the other way around my company owns his company and she asked me why I couldn't just tell her that and I told her I was the CEO. She asked how I was the CEO at 28 and I told her I was COO at 24 and they made me CEO at 25. <br><br>She excused herself to the restroom and I thought she was just surprised. When she came back I asked if she was okay and she said she needed some fresh air. When we finished I walked her out and I suggested we take a walk in the park. We walked for 10 minutes and she stopped. She told me she was ashamed of herself, what she wore, and her relationship with me, she said first she was ashamed of being poor, now she was ashamed that I was so much richer than her. I told her not to worry about it, I made my own choices. She said she wanted to eat in the lobby and I told her that defeats the point of eating out.<br><br>She told me I was being callous and I should be ashamed of myself that it didn't bother me that I hurt her with my words. I told her that's not what I meant, I meant that the only difference was location, the food would be the same and in that case I'd rather stay home. She asked if that's what I wanted and I told her yeah, I'd rather eat at home. <br><br>She left saying she's in a mood now and needs time. I feel like an AH that I have money. What did I do wrong?