You have a degree, 100K in debt, and you're willing to work for $130/week? Really? That means you earned $6,760 last year. My college daughter is going to work as a summer camp counselor this summer, and that pays between $200-250/week plus room and board. You could literally work two days a week as a substitute teacher and make as much money as you are now earning. You could earn more by working part-time at McDonalds, and I find it hard to believe that you're not able to find minimum wage work. I'm also in the deep South, where wages are low.
I'll second an idea that was thrown out by another poster: Join the military. This'll allow you to travel (admittedly, not to places of your choice), it'll pay your basic bills and certainly will pay you more than you're earning now. You may also get some job training. If you do a 4-year stint and live as frugally as possible, you can come out with enough money saved to get yourself a start somewhere, and it'll look better on a resume than "babysitter". This'll also take care of the issues about cars and housing, and it'll give you medical benefits for the rest of your life.
You should go now -- while keeping the piss-poor job you have -- go talk to at least two recruiters from different branches and see what they can offer you. Since you feel an obligation to the mom in this situation, aim for staying until the end of the school year. That's only four months, and it'll probably take you that long to make a decision about a military branch, to go through the selection process, and be accepted into a basic training class. But start investigating now.
While you're doing a military stint, you should work on making contacts in the field of communications, marketing or whatever. It's quite possible that you could work in this field while in the military -- they have all sorts of communication and coordination needs. That type of degree can be profitable, but only if you have some experience and contacts; people who have a "soft degree" like this and ONLY classes ... don't get jobs. You need to form a long-term plan to get into a professional job and every single week do something to further yourself, even if it's only volunteering with a non-profit to handle their communications needs.
Bottom line: If you keep doing what you're doing now, you're suddenly going to be 30, 40 years old ... still in debt, still under-employed. This is not a time to look for a fulfilling job that makes you happy. It's time to figure out how you can get out of this very deep hole you've dug. If I were in your shoes, I'd be calling a recruiter right now.