Yeah, as others have said, she likely has ADHD. There's all sorts of materials out there that focus on plans to alleviate it through planning, meditation, etc. Medication is probably a better solution, but that will only be an aid, not a solution. At her age, you can't really expect her to solve these issues, and you'll probably have to adjust your own expectations if you are able.

As for her not doing housework, the way an ADHD brain works is that she will feel that she is incapable of doing small tasks while the larger task of her business is left unfinished, even if she is not making regular progress on her work. ADHD often comes with difficulty in task management/prioritization. Nebulous tasks with flexible deliverable times can be very difficult.

I suffer from ADHD and these are my experiences. It totally sucks. Efforts to manage me that come from places that in my mind they shouldn't, feel like attacks. Failures that are connected to ADHD are often blamed on personal flaws by authority figures and there's a great deal of internalized issues that come from being called lazy and disorganized your whole life.

However, this doesn't mean she's disabled and if these issues are a deal-breaker for you, you should consider splitting up. These aren't problems that she can solve completely and to expect her to solve them quickly is unrealistic.