Since Telethia was adopted, it's intriguing that there is DNA available. Unless this was not an adoption from unknown parents. Were Telethia's birth parents related to or known by her adoptive parents? Why did the topic of Telethia's adoption come up right before her disappearance? It seems like there is more backstory around the topic. If LE searched the adoptive father's home, then if the birth parents are known, did they talk to them?
Anyway just sharing my thoughts to keep Telethia in our thoughts.