It appears that if you tell your daughter, who's driving 5 hours to get home, if you get tired, call us, and we will come and get you, she will take you up on it when a combination of a long day, construction, and heavy traffic means she is starting to get sleepy half way home. When we arrived at her stopping point in a semi-isolated gas station, she hugged me, and she said -- three times -- on the drive home with her mother that she really appreciated our arrival.
It also appears that if her location is two hours away, that means you have to travel two hours to get there -- well, duh, of course -- as well as two more hours to get home. Oh, yeah.
Which means that if you've left the house at 930 PM, you won't get home until about 130AM.
Which is on the seriously late side for the one of you that still has to get up in the morning in order to get to work.