Ask HN: How to deal with a low competence co-founder that you're stuck with
I am currently in the process of bootstrapping a startup. I have one co-founder, who also happens to be my long-time girlfriend.
She has been unable to find meaningful work in the year and a half since graduating with a PhD. Though she doesn't really bring any highly valuable core competencies to the table, I could a researcher, content writer and administrative assistant, so I've tried to get her involved in that role. I feel like she might as well be productive, and since we co-habitate I'm basically already supporting her.
The problem is that she is generally careless, and she doesn't seem to take real pride in her work and doing a good job. She also doesn't take the time to learn what excellence in a given task means; for instance, I instructed her to read up on copywriting and creating content that sells so she could produce better articles, but she basically said that was too much trouble and what she was writing was fine.
When I express my issues with the way she conducts herself, she gets extremely defensive and refuses to admit she has problems. She basically says I'm being "mean" and a "douchebag". I admit I'm not the most sensitive guy in the world but I don't have issues with anyone else I manage, mentor or work with.
Cutting her off would basically mean the end of the relationship, and I'm not ready to throw in the towel yet. Additionally, she has a respectable endowment that we could draw on to get us past early business cash-flow issues.
So HN, how would you deal with someone that has a bad attitude, lacks pride of ownership and quickly gets defensive? What management strategies would you use to reach this person, get them more invested, and help bring out their passion?