I think she was disfellowshipped first and then became suicidal due to the disfellowshipping.
Yes, that's correct. There was really no hint before that she might be suicidal.
Could you subtly point out to your sister that further involvement in the organization wluld likely be bad fof her mental health?
Unfortunately, her response to all of this, rather than objectively examine the effects such a high-control religion has on young people, is to pull her two younger children out of school and have them homeschooled.
This is why baptizing those under 18 yrs of age should not be allowed
Indeed. My niece was only 11 when she was baptized. The prospect that someone so young is somehow in position to make a lifetime commitment is beyond ridiculous.