The Mystery Woman in the Single Horse Sled With No Bells

Levi: Even though Levi and Elma are not seen leaving the boarding house together, I think it's a fairly safe assumption that they did. But to your point, we hear of Elma as soon as she leaves, Catherine's boarding house is potentially she is the mystery woman in this single horse sled with no bells, bracing down Broadway between APM and 9PM,. She vanishes. You know, were the original investigators able to really drill down on a good timeline to where now we narrow the window of when Elma was alive and when Elma is no longer seen and presumed either dead or she's off on her own?