This case makes no sense. The investigators should bring both parents in and confront them with the children's story and ask them the truth.

"Siblings of missing Washington girl Oakley Carlson, 5, said sister was 'no more,' 'had been eaten by wolves"
"The young siblings of missing Washington 5-year-old Oakley Carlson told investigators and a friend that their vanished sister – who was reportedly last seen over 10 months ago – is "no more," and had "gone out into the woods and had been eaten by wolves," authorities confirmed to Fox News on Wednesday."

https://www.msn.com/en-us/news..../us/siblings-of-miss