It's been a while since I've replied to anyone in this thread.
I want to thank everyone for their kind words and their suggestions. It was very much appreciated!
Sadly, my pup was re-homed. I flew out to Wales for 2 weeks in March. During that time my mom found a new home for Pitty (my pup). I was completely floored and heartbroken beyond belief. As melodramatic as it may sound, I was devastated that I "never got to say goodbye" to her. Going back home to the US was so unbelievably hard. It may sound ridiculous, but Pitty was the one that kept me together every time I was missing my fiance. I couldn't fathom coming home with a broken heart from missing my boy only to be compounded by the loss of my dog.
I still miss her A LOT and if I think of her for too long, I totally cry. However, I am happy to announce that 4 months later, my fiance is now my husband and Pitty's new mom and I speak on a regular basis thanks to Facebook! I couldn't have imagined a better family for Pitty. She lives in a home now with 2 very active children (12 and 16), 2 dogs (a fellow border collie and a blue heeler) and a handful of cats. She is doing so well and her new family absolutely adores her.
I am now in the midst of filling out my spouse visa and will hopefully be with my husband very soon. I'm crossing my fingers that before too long, the sound of puppy paws pitter-pattering about will fill our home!