>>80252 (OP)
Since we know someone is guilty, but we don't know exactly, the crime likely involved someone being sneaky. That eliminates the lady on the right, there's no way her big ass is sneaking by anyone. The lady in the middle might be the smallest, but her clothes would certainly get in the way of any sneaky activities she may get herself into, I don't think she can get away with anything with her dress ruffling around so much. That of course leaves the lady on the left, just look at her face, she is obviously the culprit. That's why she has her eyes closed, she'd ashamed to even look at us!