She's upset and blowing off some steam, that's alright. I don't want her to leave the forum. It's okay to be a little upset about things in this situation for everyone involved or reading about it.
Everyone...no matter who you are or what you are doing with chins...when a chin is sick, drop everything and call/go to the vet. There was a scene from a movie where a lady found her sick dog one morning...she just grabbed her keys and got in the car and went to a vet - The Year of The Dog...I think that was it - no questioning it, no wondering if you can afford it - just go. It's the same way with chins...get in the car and go, call the vet from the car. If your vet can't see the chin, call another one. It's so important to have a back up plan and back up vets. I have three or four vets to call myself most days...but that's because I know that I may need them.
One example for me is a little chin that started making a gagging noise. This had to have been 11 or 12 years ago... I put him in the car and took him a vet that I knew saw chins, didn't call or anything. She took the chin, used the gas to put him under, and was able to get what was blocking his esophagus pushed out of the airway...he was fine after that. If I hadn't taken him in right then, he would have died. Chins are delicate and you have to take everything seriously...even if it seems like it's going to not help, try.
That stupid boyfriend has learned his lesson. Hopefully next time he'll hop in the car and zoom the chin to the vet. He needs to understand that he has to try, no matter what. The chin may have needed to just be euthanized, who even knows.
I do hope that this was nothing contagious. Poor Mickey... RIP little dude.