My friend won’t pay for any of the expenses for the concert we’ve been planning for months.

So my fiancé, my best friend, and I are traveling a couple hours out of state for a concert we’ve been planning since January today. My fiancé paid for all of the tickets, a little under $1k for all 3 tickets. We told my friend that she has to pay us back for her ticket and that still hasn’t happened. We bought them back in January and we told her the same day we got them. I was talking to her last night about how we need to get a parking pass which range around $25-$150 depending how close we get to the stadium. I explained to her that I can’t afford it since I currently don’t have an income due to being disabled plus pregnant. My doctor won’t let me work and getting on disability is rough. I don’t want my fiancé coughing up any more money that he has to since he already paid for the tickets, driving us there and back, and is planning on paying for gas. Plus he has work early tomorrow. She didn’t say anything and just kinda ignored that whole part of the conversation. I know that she has the income since she doesn’t pay rent or utilities and she talks often about how much money she spends on things she likes.

Is it wrong that I just want her to pay for this one thing? I don’t know what to do or how to approach her about it.