<human>: Could you distill the essence of the text into 1-3 sentences?

She is 23F and I am 26M, together for 2 years, currently living together, engaged.  She is currently attending grad school and her only source of income is her graduate assistantship stipend (and loans).  I am 5 years into my career, make a decent salary, and have no student loans.

I pay for all of our joint expenses (apartment, groceries, dates, vacations, trips to see family (we're from the same state), etc.) while we each take care of any personal expenses with our own money.  

I am completely fine with this situation as she is very responsible with what money she does have coming in and spends rather frugally.  I have reassured her several times now that I am happy with our situation and harbor no resentment over it.  I know she will contribute when she is out of school.  

She has told me that she feels like she is taking advantage of me and feels guilty that even when she does have a job after graduation that she won't be able to contribute anywhere near the amount I do to our finances.  We've discussed these issues several times until I thought the feelings were resolved, but they keep creeping back up.

I've opened her up to my finances to try to make her feel included, and we have a joint checking account that we use as a slush fund for fun stuff.  We made a rule to let each other know of any purchases over $50 so that she feels included on financial decisions.  I make an effort to always talk about money as "ours" and not "his and hers."  I constantly reassure her that I am ok paying for our joint expenses, and make sure that I don't ever hold it over her head.

Is there anything more I can do or say to her that makes her feel less guilty about our income disparity?
<bot>: SO feels guilty that she doesn't contribute very much financially, what can I do/say to make her feel less guilty?