I'm sorry to hear that, Rusty. People can be at their worst when they lose a close family member. Sometimes the grief and stress can drive a wedge between people. My aunt's husband's family fought like hyena's over their mother's belongings and estate when she died. It got pretty ugly. But grief is still no excuse to be a complete jerk about things. The sister not wanting your wife to have the vehicles reminds me of the tale of the dog who sat in the hay and wouldn't let the other animals eat it. He didn't plan to eat it, but he didn't want to let any other creature eat it even though he really had no use for it.
Meanwhile, I went to go for D&D night and when I arrived at my friend's house, he discovered that his ex-girlfriend (that he allowed to stay with him under certain conditions--- no alcohol and no bringing strange people home) was drunk and had brought home two strange drunk guys. One of them was in the bedroom when I got there. My friend finally put his foot down and was chewing her out for stealing from him, disrespecting from him, and using him. The guy in the room with her was being belligerent and mouthing off so he told the guy to get the eff out. The guy laughed at him and then started arguing and telling him he didn't have the authority to tell him to leave. My friend said he'd call the cops. I got my phone out and pulled up the number for the police for him in case he needed it.
Then, not only did belligerent drunk guy not leave, he went to the refrigerator, got out a pitcher, and started pouring a drink. My friend was trying to wake his roommate (a former professional wrestler) and I confronted the guy and told him to get the eff out. He started walking toward me like he was trying to intimidate me but I didn't back down. I told him that I would shove his a** out of the place if he didn't leave.
I was very close to getting in to a fist fight with the guy. Then the roommate came out and told him to leave and they woke up the other drunk guy who mumbled about how there would be trouble if the cops showed up. Belligerent drunk guy started smoking in the house (which is not allowed) and was walking around kicking things and was going away from the door. I stepped in front of him, he tried to step around, I moved again. He finally politely asked me if I would please let him pass. I told him that since he asked politely I would. Eventually he and his other friend left. The ex-girlfriend was told she had 30 minutes to pack up her stuff and get out. She disappeared for awhile, but her stuff was still there and she came back in and sat with us and didn't leave, but things were calmer then. She apologized to me for the belligerent idiot's behavior. She was still there when we left after the D&D game.
Not sure how things went after we left.