I am not sure I understand the ins and outs of what you have posted. But, on the other hand, I don't think that I have do to see that your train is off the tracks again!
These things are beyond your control! Try your best to put your focus where it SHOULD be...on you. In doing so, you will be accomplishing your GAL goals which, in turn, gets you farther down the DB path.
Yep, pretty disgusting to see the sl$tmobilbe by your H's car. But it's just a car, afterall. Maybe there wasn't another space? Maybe she feels like playing games with you? or with H? Please, do not dwell on it!