2019 job offer

Sometime in early 2019 I was offered a promotion at work. I was currently working part time during the school year following closely with the school breaks. Our second to the youngest child is disabled and unable to care for himself, needing 24/7 supervision and care. My work schedule afforded me the ability to take care of him during school breaks as well as afternoons and evenings. The promotion included a full time year round schedule. I told my boss I needed a few days to consider it. I was already having to rely on my older children on occasion when my work schedule conflicted with school breaks. Taking this job would mean having no choice but to find outside care. I was so torn, although flattering, accepting the job seemed ludicrous. I made the mistake of telling the Ex about the offer. I told him I felt I needed to turn the offer down due to son’s care needs. His reaction was swift and dripping with anger. Ex stated that I wasn’t contributing enough financially to the household. I wasn’t pulling my financial weight. He shouted how could I even consider turning down additional income? He said turning it down was unacceptable and lazy and he was done with me taking advantage of his money. With a heavy and apprehensive heart I accepted the job. The job start date was July 1st, but we already had our one and only vacation of our entire marriage scheduled. A trip to Wyoming in the recently purchased travel trailer. I negotiated a delayed start date for as soon as we returned from Wyoming. I had such high hopes for the return to Wyoming, instead it was the very embodiment of the previous 18 years living with the Ex. All the pain and disappointment. I came face to face with the undeniable reality that he is incapable of true happiness. That trip was the pivotal turning point in my journey to rediscover my self worth.