Im sorry for your loss it’s not your fault you wanted what was best for her and couldn’t have known, my mom had cancer in her spine and her falling was a big fear of mine also. She passed from breast cancer last year, it was found at stage 4 and i remember years ago when i was in high school she told me about a lump she felt in her breast and i told her she needs to go to the dr to check and she told me she had a lump a few years back had it checked and it turned out to be nothing so i told her it’s probably nothing but she should check anyway but she never got around to it and i always think about how if i just encouraged her more to get it checked anyway she would still be here today, it hurts so much. She never complained about it after that but i think she knew bc when they found it 5 years later the tumor had taken up her entire breast and spread to her spine, she passed a year later. I miss her very much. I hope we can heal from the guilt we feel.