I agree, however I have other doubts as well:
Absconding with a seven year old girl while there is an alarm system, a dog, parents and other children present and leaving no forensic evidence.
Parents lying to law enforcement for 17 +/- hours after their daughter goes missing.
BVD inviting TOTAL STRANGERS back their home that night.
Too many irregularities. If they said DW snatched her off the street, I probably would have bought it, but entering an unknown home in the middle of the night, with a dog and parents, no way.