Rhonda, you have given up so much in the past few years. It has to be really hard right now. I would say make it through this school year and start right now looking at teaching on a college level.
The owners daughter of the dance studio I work in just finished a national tour of Shrek and she came home and went right to work at a nearby junior college teaching dance. She is making good money and also adding even more to her job experience. She is not tenured of course since she is new but they plan to stay in this area for many years. She could of course decide to move up and teach at someplace like OU or OSU at a later time.
I would recommend you take a breath. It is 9 weeks until the last day of school. It is not forever. BUT start tomorrow looking at nearby universities or colleges at the employment opportunities. They may have the perfect job for you.
There are also other options if you are willing to start an personal business. There are so many moms putting their kids in beauty pageants and other stuff. They are chomping at the bit for a professional winner to take their child and mold them into some beauty queen winner.
You could advertise your services as a stage coach to help the girls learn stage presence, how to walk, how to wear makeup, hair design, routines, etc...there are so many options in the industry you have left for your family.
I am so sorry for all that you have gone through this past few months and even the years leading up to that. You have every right to be unhappy but you do not need to complain about making $18 per hour when some of us are nearly starving for lack of finding jobs or for sacrificing everything for ourselves so the kids in our family can have simple things.
If our dance/gymnastics studio did not allow me to work in the clothing store I would not be able to send the kids to any classes there. I have told them over and over that I would still be grateful even if the asked me to clean the public restrooms with a toothbrush. I am very grateful they allow me to help out in exchange for class time for the kids. I have a tumbling fool for a granddaughter and she loves her hip hop dance class and hates ballet and tap but goes anyway. The boy loves both tumbling and gymnastics.
I think making that much money is the central USA is quite good. It is more than a lot of other people make. I know it's not what you are used to. I think that finding a better work environment and with that a better pay scale would help you feel better about a lot of things.