Thanks everyone, for the input so far. I'll try to keep it short: My background has been in science and education. When teaching jobs were getting slashed, I started to look for a new field. My side gig has been working at a doggie daycare/boarding place for years. Two years ago, a colleague was selling her small, pet retail shop less than a mile(walking commute!) from my house. I talked with a SCORE mentor, an accountant and a lawyer, and my husband and I decided to take over her lease (but did not purchase the business, b/c she had another location in a neighboring city.) Short story: she's being investigated by the IRS for all kinds of financial irregularities at that other location, and all the paperwork she gave us from her accounting firm was falsified. Which was what we used to build our business plan.
So I was putting "Co-owner" or "Owner/operator" because it's a small shop and I am the only person staffing it. On my resume, I list all my associated customer service and business skills for that heading. Now I've just started putting "Manager" to see if that goes over any better. I've been applying for jobs like "education coordinator" at various museums, nonprofits, etc, as I have over 5 years of teaching experience. I live near a number of small colleges, so I've also applied for jobs in financial aid and development offices, assuming that customer service and bookkeeping would be assets for an entry level role there.
I'm going to send my information to the career counselor at my grad school, and see what she recommends too. Since there are so many entrepreneurs here, I know I can't be the first person to have to overcome this! :)