Okay, so kupo has never been a fan of buses, but we were at a point were she would get on to the bus and then stand next to me, no tremors just a 'i will deal" kind of attitude, and once off the bus she would do a big shake and then be fine.
However (I think I mentioned this in a earlier post) we had incident where someone threatened to stab her when I tried to move further down the bus, which caused me to have a panic attack which I internalised fairly well, but I think kupo picked up on this, and now we have completely regressed on the bus travel situation. I thought taking the bus down the road to the park might help associate it with something good, but it's not worked. If she spots a bus she immediately starts to pull away yelping and whining. When I manage to get her on the bus, she shakes the entire journey, any noise outside like leaves hitting the bus makes her yelp.
Even if we aren't traveling by bus and are just walking, the sight of a bus causes her to panic I think, so much so she nearly broke my finger the other day with how hard she jumped away.
I'm kicking myself even though I know that I couldn't help my anxiety attack due to that situation, and I'm so beyond angry now at that girl/woman. 
One sentence has completely ruined all the work I had put in since she was a pup into being used to buses, since vet trips require a bus to get there.
If anyone has any advice or tips please send them my way. I'm posting this before I go to bed in a bid to help get it off my mind so I can sleep, so if you reply and I don't reply back I promise I'm not ignoring, I'm just snoring away.
Again sorry for the wall of text xxx

Anxiety or fear of buses, sorry for the wall of text