I feel very sad for Betty. Trying to imagine how her life looked like, before she went missing. For clearance I ignore the details for now.
- She was bi-polar, I suppose she should have taken medicine to keep it under control. IIRR she didn't took her medicines for a couple of days. Things could have gone from bad to worse.
- Her spouse died, one of the most stressful events in a human life, sometimes causing memory loss, concentration problems, mental pain and what not. This on top of struggling with mental health problems.
- She had terrible back pain, must have been bad, taken fentanyl for it.
- She was totally dependent (or made dependent?), not "ready" for a world full of electronics, apps, having to arrange everything digital on the internet, etc. Her husband took care of everything. Also this would cause a lot of stress, not knowing how to handle things (I remember a lady who's husband had died and she panicked totally when the electricity went down, because a fuse had blown and she didn't even know where the fuse box was.) She couldn't even handle a mobile phone, let alone other (mobile) devices, she had no transportation, her daughter took care of her finances. In other words she was or would have been totally lost in the modern world.
- She had dementia in the early? stages. That would mean she had clear moments where she would realize that she was "loosing" it. On top of mental health problems, physical pain and mourning.
- The "highs" in her life were the visits of her children, the church and the weekend visits at her daughter's. All arranged, nothing spontaneous.
- The family arranged for her that she wouldn't go living on her own anymore, taking away the little independence she still had.
- She was poor
Someone told me "God wants us to live a livable life". For me personally this would be hell on earth.
All the family interventions around her sound very altruistic and is surely full of good intentions, but taking all the above things into consideration I think we should't close our eyes for the possibility she somehow took her own life or she called someone to help her with it. I'm leaning to wondered off, accident, suicide, not foul play. IMO