I kinda understand maybe where she's coming from, unless she's a tsundere, because I feel like if I had been born as a woman, a straight woman, I would want to marry someone who has a decent salary and is a good man and I will decide to love that person and create a family with him but I won't leave him till he decides to give up on his own family. (These are thoughts I had because I'm lazy and want an easy life.)
People say money can't provide happiness...but it CAN provide a lot of things. Some people don't want a lavish love-life, but an environment to start a family, and money is a basic requirement for it. So marrying someone primarily for money doesn't always mean she's a gold-digger, she just might be someone who is thinking about her future with you.