NWR: Mourning the loss of my dog

I haven't posted much in a few days because I was away in California for my best friend's wedding. I came home late Sunday evening and Monday morning I called my mother to ask how our dog Muffin was doing. Muffin is our dog of almost 10 years. She is a beautiful lab/shepard mix that we rescued.
Last week, she was feeling ill and my parents took her to the vet. They did some xrays and found that she had ingested what looked like string. Muffin had never been the type of dog to chew on things or eat objects that wasn't food....It was unusual.
They performed emergency surgery on her on Thursday and she was recovering well. My parents visited her every day and she was alert and wagging her tail. On saturday my parents went to the vet and wanted to take her home but she was running a slight fever and promised my parents they could take her home on monday.
Sunday my brothers went to visit her at around 3 pm and the office was closed. Which was upsetting because my parents paid for 24 hour care. Monday morning they called to tell us she passed away.
We are devestated. I left my office in NYC to go to LI to say goodbye to my girl.
In the past, I've seen people leave the vets office crying and in the back of my head I always feared that one day it would be us.... This past Monday we were the family that was crying at the vets office.
I'm so overwhelmingly sad and my heart is broken. I was planning on having our family's two dogs (Muffin the lab and weezer the pekingnese) involved in our wedding in september. I worry about the second dog and hope that she will be ok with the loss of her buddy....
Anyway, I just needed to talk. I've been on my couch crying because I don't want to wake up FH....