I would wonder if your pup has a bit of a confidence problem due to the death of your dad. If she lived with him for a few months, bonded with him and then sensed the emotions everyone felt with his death, I would imagine as a young sensitive pup, that could cause some serious confidence issues.
I think she could have some issues due to loosing him. She displayed so much confusion after his death, she even showed aggression when she was taken to the boarding clinic. So naturally I think it messed her up some.
Here is the car scenereo in a little better detail:
I send the kids out first, then make Sheba sit and wait at the door while she is leashed, I then open the door and make her continue to wait then give her the command to exit. At the truck she again sits and waits while I open the tailgate, and release her to get in (release is let's go). All the while she is calm and quiet.
Once in the truck I tie her down (via her harness and the hook in the floor) As soon as the vehicle moves she starts whining, pacing, and occassionaly a barking cry which is ear peircing. I ignore what I can to keep from rewarding it. If at any point she is quiet the kids hand her a treat and say "good quiet".
The ride isn't all bad until we hit the sitters house, she has two outdoor dogs who naturally bark when we pull in, that is what sets SHeba over the deep end. She goes absolutely insane! I can't get her attention long enough to even get her to lay down. Same happens at work if clients are out with their dogs.
when exiting the truck she again knows to sit and wait until I release her to get out, but this time it takes longer because she is trying to focus on me, but gets distracted by the excitement. She would never bolt from the truck, it's like her butt is glued but if I don't release her as quickly as she would like she barks at me and shifts her front end, i think it takes a good 10 minutes for her to get the hint to calm down.
I have tried the crate, and it made it so much worse. I have bad memories of when I drove her from Fl to Tn. 2 hours into the drive I was forced to heavily sedate her with ace just to get some peace.
I think it's just going to be one of those things I will have to continually work on. Sadly it's a lack of time that makes it so hard. I have to admit that short rides aren't as annoying as they used to be, baby steps I guess.