I have been following this from the beginning, but this is my first comment. I could not comment before the brother was arrested because I did not want to violate TOS and I could not shake the brother being the most likely suspect. There were so many things that pointed that way. The LE remark that the attack was purposeful, and the community wasn't in danger (paraphrasing), the neighbor who said the man running from the house who later recanted were two red flags to me. I am perplexed about the clothes worn by the brother/suspect but it seems that LE has been keeping info close to the vest.
My heart breaks for the parents, and also the biological mother of Leila who surely must be grieving, regardless of her mothering skills. My love for a child in circumstances such as the brother's would be un conditional, but at the same time I do not think I could be supportive of him. I truly have no clue how this blended family - all members - will find the strength to sustain them during this time. No one should have to endure the suffering these people are going through. Finally, I cannot imagine the judge releasing the child to his family until the trial. As a parent I could not let any child in such circumstances return to the home at this point. This is a horrendous tragedy in every aspect.