I've been feeling so bad for you Amy-I know I'd be so upset if I were you.
However, let me play devil's advocate here, & keep in mind that I'm very inexperienced with medical problems:
1) The soft spot thing: I wonder how much Chi is in her because it sounds like this might be something that's not really uncommon or problematic. If you're lucky this could be nothing. (If you take a dime & put it on the spot is it bigger than that?)
2) LP thing: Both my dogs had a little clicking when young & they've not once had any kind of problem with their knees. They're 9 & almost 6 now.
3) The vulva thing: Maybe you just need to keep it clean. Many of us Yorkie mamas wipe that thing off once or twice a day.
I just thought maybe looking at the
best case scenario could help you.
(LOL, I am not a friend of the breeder!!
)
Take care,