Girlfriend makes way more money, but doesn't want to feel she is supporting me?

After two years, we'd like to move in together. Her career is very established and she makes a VERY good salary for a person with no dependents, but I am self employed and struggling through my first years. I need a large studio space for my work, and would rather this be separate from our living space if we're sharing it. If I were paying for a work studio I could only pay a small fraction of the "home" rent compared to her, but she would still be paying far less than she currently is by herself (because her current place is way overpriced). Her concern is that she doesn't want to feel she is supporting me, but I feel like that discomfort is minor compared to how much it would benefit me and our relationship by keeping my work separate from our home life. Any advice?