IMO this feels a touch miserly.
You don't mention your ages, but I'll guess you're middle-aged like most of us here. If so, if you're holding out for Hot, sane, AND financially independent... well.... I hope you enjoy first dates.
If you're truly in a place where you're tracking to retire with more money than you'll know what to do with, you should probably accept that you CAN afford to at least help support someone. Unless you're model-esque with a massive rooster yourself, you may want to understand that is part of your allure to the opposite sex. That's normal (within reason) and no more shallow than men seeking physical beauty.
As others have said..
. have a talk with her. What are your goals with this business? Where do you see yourself professionally/financially in 10 years? 20 years? What is your path to get there?
If her "plan" is for her corner store to turn into the next Lululemon without a clear plan, and refuses to entertain a backup plan... you know what you've got. If she has a clear plan, or admits the shop is a passion project and has a career to fall back on... then you're likely good.
In any event it's early... but not so early that these communications are in appropriate. Do your best to not frame it as an ultimatum or an interview..... but make it clear that you like her a lot, you see potential, but you have concerns worth discussing.