I'm glad that this category was started here. I also have read about the Tammy Kingery disappearance (& many many other stories), and the heartbreak that her family has had to go through afterward.
It seems that she didn't receive the help that she needed with her depression. Depressed people tend to isolate themselves, even though that isolation obviously can create complications:
1. Being alone doesn't help with the depression/symptoms
2. When one is apart from family/friends/people in general, the depression can become sharper
3. It's difficult for a depressed person to ask for help
4. Sometimes the depression wants to hide (like what...maybe pretend that it's not there - too painful perhaps)
5. Comment about meds: it can be quite challenging to find an effective medication + a workable dosage (so so frustrating for the people who are suffering...as well as for their families)
6. There are many many helpful and sympathetic medical professionals who treat depression (whether by psychotherapy, meds, or a combination of both), but as with anything else in this imperfect world, some are either not as effective in their treatment &/or not compassionate
7. #'s 5 & 6 experienced in combination can intensify the depressed person's feelings of being let down by others (their anger level, even) - they're just frustrated - like why isn't anything helping - I hate feeling like this, it sucks
#7 might sound overly dramatic, but it does happen & tends to make the whole situation worse.