Leaving my full-time job to care for my mom. Losing my health insurance.

In 2019 after a VERY expensive divorce my 78 year old mom suffered a stroke causing some vision loss and forcing her into retirement. She was unable to drive to her appointments or get groceries for herself. I was working full time and had two daughters attending the University where I was employed (as a benefit of my job the private University covered 90% of the kid’s tuition as well as excellent health insurance and other generous benefits). I lived/worked about 75 miles one way from mom so I had her taken to a facility about 15 minutes from her home for her to recover. As the youngest of four siblings (my two brothers had past away from Early onset Alzheimer’s a year prior) and my sister lived about halfway between my home and our mom the majority of the decisions and take her to appointments. I have four children of my own, two were in college at the time , one was in high school one in middle school. I was running myself half to death trying to be everything to everyone and not doing anything “well”. I had suffered a concussion about four months prior to mom’s stroke and was using FMLA while I recovered. Therefore, I had exhausted that benefit so I was using vacation and what sick time I had. Once that was exhausted I took days without pay. I made a decision to leave my position she could go home due to the fact that my sister was completely uninvolved. Then COVID hit! Mom wouldn’t leave her house and declined significantly. She noticed a lump on her breast and once I got her to a doctor she had about nine biopsies and they “stopped because there were too many tumors to count”. She had a mastectomy moved in with me and I took her to radiation every day for six weeks. She returned to her home and was doing well then I got COVID and didn’t see mom for almost three weeks (typically I would visit her, take her groceries, pay her bills etc). After not actually seeing her for so long I immediately noticed she was very different. I immediately took her to the ER and the Dr showed me the images and I saw 9 lesions on her brain. She had a procedure called Gamma Knife that broke the large tumors into smaller ones. Long story short my sister was no where to be found. I was alone in this and still had kids to take care of. After this procedure in January of 2022 her oncologist told me in February “spend as much time as you possibly can with your mother for the next two weeks”. My mother currently lives alone and does what she can for herself and certain she is a “medical miracle”! I have seen to moms every need (with the amazing help from mom’s neighbor) and am blessed to have her still with me however I have been driving around 140 miles 3-4 times a week since 2019. I have interviewed for a few jobs and worked a couple of part time jobs but I haven’t had health insurance since I left my job in 2019. I am 51 years old and need to take care of myself because if I get sick what would happen to my mom? She is financially stable and tries to help me with things like gas money etc but when my sister found out mom was helping me she filed a Civil Lawsuit against me for “misusing mom’s money, elder abuse, theft of mom’s valuables and about 6 additional things. I have spent $40k this year alone in legal fees defending myself against this lawsuit. So I can’t pay for private healthcare. Am I missing something that is out there to help me get just a basic health insurance?