I'm 62 and the mother of a 27 year old. I'm going to respond to some of what you said as I would to my daughter.
First forget the money. It sounds like a lot and paying it off will seem like it. Consider the payment your monthly reminder to be more careful. Call the company, explain what happen, your situation and ask for reduced or no interest. They will probably want a letter from your doctor.
Next know that while your parents would love to have a grandchild, they also want you to be as near as possible a perfect parent. It may be your child, but as grandparents, they are going to want better for the child than they were able to do for you. Right now you are dealing with a lot of emotional pain from relationships. On top of that you're dealing with having seizures (maybe not medicated quite right yet), and finding some sort of work.
That's a lot on your plate. If I were prioritizing, seizures and job would first--and let all the rest wait.
So that's what I would tell my daughter.
Now about the job.
First call unemployment and ask for phone numbers for a displaced homemaker or handicap programs that will/may test and re-train you. Counselors at either should be able to help fit the training program to your needs and cabilities.
Right a good resume. There are places you can pay, but save the money. Secretary/typists can help with resume formats, wording and proofing. Teachers can help with wording and proofing. There are articles and even free resume makers on the internet.
I would suggest that in "Objectives" you state that you are looking for work Dallas/Fort Worth area and that you have seizures so you are looking for work you can do at home--or a job, which can supply transportation.
Now you really want to think hard about who to send it too. First put it on the internet. People ARE being hired off the internet. The Federal government has requirements for hiring females and the handicapped. It also has lots of jobs where you respond to phone requests for information for very good pay. You would probably have to go somewhere for training, but that would be of limited duration.
So the number one place to look is federal, state, and local government offices, which have a need to respond to phone requests. If there is a nearby military base--send it to them. Next think about places that receive federal funds--you are in oil country, and odds are the oil companies and many others have federal hiring requirements to meet.
You are seeking employers who have a reason for specifically wanting to hire someone who fits in government guidelines. The federal government may offset your salary for the employer and provide extra funding to assist with company adaptations, made to fit your needs.
There should be an office or agency called "Man Power" or something like that. They supply people for temporary employment. In a town as big as you are in they may have temporary jobs you can do at home.