I don't think DH's wife said that BW asked him that day if she could come that day. It could have been a couple of days before she actually headed to Styx River. I am floored to hear it has been confirmed that DH picked BW up. I became convinced of that but am still surprised to hear it confirmed... FINALLY!! Tillman's Corner is only a few minutes from Mobile, depending on what one is calling Mobile. Maybe ten minutes driving straight up the highway (not interstate, that would take longer). Many people call Tillman's Corner "Mobile".
If you look at Government Blvd. on this map and go towards Mobile then you will see Knollwood Dr. I don't know if that's in the city limits or not but I lived in TC for many, many years and everyone considered Mobile to start right about there.
http://maps.google.com/
EDIT: I can't get it to link to the map. Go there, enter "Tillman's Corner Mobile Alabama" and "Mobile" and it will come right up. I have thought for some time that those low budget hotels along Government Blvd. should be searched. It's been awhile since I've been out that way but there used to be lots of them along that route going into Mobile.
ANOTHER EDIT: If BW walked to(wards) "Mobile" from TC, I am convinced MOO she went up Government Blvd. Someone had to have seen her!!