Am I supposed to have learned something?

My mom had breast cancer and resisted testing, or even admitting that she was struggling for years. When she initially told me and my sister that she had found lumps in her breast I immediately asked what she needed or what was she thinking needed to happen next. Her response still haunts me. She said she was going to pursue alternative therapies…and I had no idea what that meant. She said that she didn’t morally agree with oncology and that they were scammers. I just wanted to be supportive because she was very tight lipped about the whole situation and my only request was that if she found more lumps or signs of spreading she at minimum would see a surgeon to remove the cancer in her body. She agreed but I found out later that she had no intention of seeing any legitimate doctor. She was convinced that the truth was that the best way to treat her cancer was through a combination of faith in God and using natural remedies. I really wanted to respect her decision for her body but at the same time I couldn’t silently see her dying because of some guy who has a website that is total misinformation about how he naturally cured his cancer by faith and dietary supplements. I remember getting in a screaming match with her about how God gave us modern medicine and that maybe his plan was to instruct us to further our knowledge of our world to help save us. But she was almost brainwashed by factions of online zealots who blamed people who have cancer on themselves adding shame on to everything else she was dealing with. I suppose that to some extent that entire belief had maybe something to do with stem cell research? Idk..but she was in the middle of a divorce living with unmonitored cancer and every morning for two years I would stay up all night until 4am to make sure she was breathing and that lead to me drinking to a point that I wouldn’t remember finding her and being more traumatized than necessary. However, when she inevitably was not going to make it I was the one who had to tell her mother and sisters that the whole situation and she was gone within two weeks. During those two weeks I was in the hospital 12 hours a day unable to leave her room for even a few minutes to gather my strength. I am still so guilty that I wasn’t able to go to the icu with her and she was in intense distress of being alone. Later on that day and day after she was screaming in pain because the hospital had run out of medication due to Covid..there was police tape everywhere and I was alone. When I was fully made aware of the severity of her condition and that she wasn’t going to be mentally there any longer I had to make the call to consent to hospice. I couldn’t go to her funeral because I had been so exposed to Covid. I’m so angry that there is a community that is built around guilting people into believing in religious manipulation and causing others to lose loved ones like I have. I feel like I should do something to share her story or maybe do something good for my community because I’m paralyzed by the whole situation. Idk what is right to do but I’ve never reached out to anyone other than a few therapists who couldn’t even understand what I had really been through.